Answer:
a
Explanation:
Due to the current relationship with groundwater and surface water, fracturing fluids like return fluids might pose a risk to both, hence option a is correct.
What is fracking?It's possible for water to get contaminated during fracking owing to chemicals that are accidentally spilled,in the water during the migration of thermogenic methane gas.
Since a hydraulic fracture might intercept a natural fracture, such as a geological fault, and be connected to the surface, this presents another potential source of pollution.
Therefore, presence in the subsoil may be encouraged during the fracturing process, which may enhance the incidence of chemical reactions and the production of new contaminating substances, hence option a is correct.
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I NEED THE ANSWERS FOR "WHERE DID I COME FROM" COMMON LIT
Answer:
u come from something called sprem
Explanation:
so when your dad loves your mom they do it slide it in then let out what all guy like the feeling of then makes u
PLEASE ANSWER ASAP
Question 6 (2 points)
Some chickens lay an egg every day. Other chickens produce few eggs. A study is planned to examine some factors that might affect the number of eggs produced by chickens. Which of the following is NOT a suitable hypothesis for the study?
Question 6 options:
If the cage for the chickens is larger, they will produce more eggs.
If more eggs are produced by the chickens, they will lose more weight.
If there is more protein in the feed, then more eggs are produced.
If chickens receive more hours of light, then they will produce more eggs.
Question 6 (2 points)
Some chickens lay an egg every day. Other chickens produce few eggs. A study is planned to examine some factors that might affect the number of eggs produced by chickens. Which of the following is NOT a suitable hypothesis for the study
If the cage for the chickens is larger, they will produce more eggs.
If more eggs are produced by the chickens, they will lose more weight.
If there is more protein in the feed, then more eggs are produced.
If chickens receive more hours of light, then they will produce more eggs.
Sam wished to investigate how fertilizer run-off affects the growth of algae in freshwater lakes and streams. He set his experiment up as follows. He placed 900 ml of water into each of five 1000 ml glass beakers. To each beaker, he added 5 ml of water from an aquarium which contained a large concentration of algae. The beakers were placed under a lamp which was on a timer to provide 12 hours of light each day. Liquid fertilizer was added to the beakers in the following amounts.
Each week, a random sample from each of the beakers was examined under a microscope to get a count of the number of algal cells present.
What is the independent variable in this experiment?
Question 7 options:
amount of fertilizer
number of algal cells
hours of daylight
amount of water
Question 8 (2 points)
Sam wished to investigate how fertilizer run-off affects the growth of algae in freshwater lakes and streams. He set his experiment up as follows. He placed 900 ml of water into each of five 1000 ml glass beakers. To each beaker, he added 5 ml of water from an aquarium which contained a large concentration of algae. The beakers were placed under a lamp which was on a timer to provide 12 hours of light each day. Liquid fertilizer was added to the beakers in the following amounts.
Each week, a random sample from each of the beakers was examined under a microscope to get a count of the number of algal cells present.
What is the dependent variable in this experiment?
Question 8 options:
size of beakers
number of algal cells
amount of fertilizer
hours of daylight
Question 9 (2 points)
Sam wished to investigate how fertilizer run-off affects the growth of algae in freshwater lakes and streams. He set his experiment up as follows. He placed 900 ml of water into each of five 1000 ml glass beakers. To each beaker, he added 5 ml of water from an aquarium which contained a large concentration of algae. The beakers were placed under a lamp which was on a timer to provide 12 hours of light each day. Liquid fertilizer was added to the beakers in the following amounts.
Each week, a random sample from each of the beakers was examined under a microscope to get a count of the number of algal cells present.
Which of the following is the control group for the experiment?
Question 9 options:
Beaker D
Beaker C
Beaker E
Beaker A
Beaker B
Question 10 (2 points)
To focus a specimen, it is best to start with which objective:
Question 10 options:
High power
Low power
Scanning
Ocular
On the image, which number represents the coarse adjustment knob?
1
2
5
10
What important feature is missing from this line graph representing sea level change between 1870 And 1990
X axis label
a title
Y axis label
appropriately spaced scales
Answer:
I know that for 6 is A) for 7) I'm between A) and C) for 8 it's B) 9 I don't understand, but the control group is whatever is kept the same and you're not testing on it and the rest I don't know
Researchers want to use eDNA to look for an invasive species in a waterway.
Which step should they do last?
A. Cut the DNA into fragments of different sizes.
B. Compare the samples with a positive control.
C. Isolate DNA from the waterwakin question.
D. Stain the gel to reveal a banding pattern.
The last step to observe different DNA patterns is to stain the gel to reveal a banding pattern (Option D).
DNA extraction, polymerase chain reaction (PCR) and fragment separation by gel electrophoresis are basic molecular techniques used to identify patterns in DNA.The patterns in DNA can be used for identifying an individual in a population, distinguishing different species, etc. These patterns can be obtained by using restriction enzymes.There are different dyes used to stain DNA before the identification of patterns in DNA.For example, ethidium bromide is a widely used dye to stain DNA before fragment separation by agarose gel electrophoresis.In conclusion, the last step is TO STAIN the gel with a DNA dye to reveal a banding pattern (Option D is correct).
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I'll give you brainliest if u help me asap
Answer:
paramecium
Explanation:
Transpiration (the evaporation of water out of the leaves) helps
pull what up through the roots and stems and into the leaves?
Transpiration helps to pull water and dissolved minerals up through the roots and stems of plants and into the leaves, which is present in the third option as the transpiration creates a negative pressure, or tension, in the leaf tissues.
What is transpiration?
Plants absorb water and minerals from the soil, and these minerals, such as nitrogen, phosphorus, and potassium, are essential for plant growth and development, the roots of plants have tiny, hair-like structures called root hairs, which increase the surface area of the root and help in the absorption of water. Water and minerals are absorbed by the roots to be transported upwards through the plant stem to the leaves, and this transport occurs in specialized vascular tissues called the xylem and the phloem.
Hence, transpiration helps to pull water and dissolved minerals up through the roots and stems of plants and into the leaves, which is present in the third option.
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How are Starch and Sucrose Similar? How are they different?
Answer:they both are a form of carbohydrates that give energy to the body
Explanation:
4. You are running a race and you speed up from 3 m/s to 5 m/s in 4 seconds.
a. What is your change in speed?
b. What is your acceleration?
The initial speed is 3 m/s and final speed is 5 m/s. Change in speed is 2 m/s.
What is speed?The initial speed is 3 m/s and final seed is 5 m/s. The change in speed is final speed minus initial speed.
The rate at which distance changes over time is known as average speed. The pace at which displacement changes over time is known as average velocity.
Change in speed= 5 m/s − 3 m/s
= 2 m/s.
Velocity = speed/ time
= 2/ 4
= 0.5 m/s
acceleration = velocity/ time
= 0.5/ 4
= 0.125 m/s2
Therefore, The initial speed is 3 m/s and final speed is 5 m/s. Change in speed is 2 m/s.
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Explain the differences between the three ways of heat transfer, conduction, convection, and radiation.
Answer:
The differences between these three ways of heat transfer are that conduction is the transfer of thermal energy through direct contact, convention is the transfer of thermal energy through the movement of liquid or gas, and radiation is the transfer of thermal energy through thermal emission. As you can see, each way of heat transfer has a different way of moving through objects.
Hope this helps <3
21. Choose one of the hypotheses from Question 20. Describe how you could set up an experiment to test the hypothesis by listing your experimental groups, control group, and at least 2 constants you would need to have.
this is question 2020. Identify the independent and dependent variables in the hypotheses below: (4 pts)
A. If a player practices longer, then he will score more points in the game.
B. If students eat a high-protein breakfast, then they will score higher on their biology test.
Answer:
Biologists and other scientists use the scientific method to ask questions about the natural world. The scientific method begins with an observation, which leads the scientist to ask a question. She or he then comes up with a hypothesis, a testable explanation that addresses the question.
A hypothesis isn't necessarily right. Instead, it's a "best guess," and the scientist must test it to see if it's actually correct. Scientists test hypotheses by making predictions: if hypothesis \text XXstart text, X, end text is right, then \text YYstart text, Y, end text should be true. Then, they do experiments or make observations to see if the predictions are correct. If they are, the hypothesis is supported. If they aren't, it may be time for a new hypothesis.
How are hypotheses tested?
When possible, scientists test their hypotheses using controlled experiments. A controlled experiment is a scientific test done under controlled conditions, meaning that just one (or a few) factors are changed at a time, while all others are kept constant. We'll look closely at controlled experiments in the next section.
In some cases, there is no good way to test a hypothesis using a controlled experiment (for practical or ethical reasons). In that case, a scientist may test a hypothesis by making predictions about patterns that should be seen in nature if the hypothesis is correct. Then, she or he can collect data to see if the pattern is actually there.
Controlled experiments
What are the key ingredients of a controlled experiment? To illustrate, let's consider a simple (even silly) example.
Suppose I decide to grow bean sprouts in my kitchen, near the window. I put bean seeds in a pot with soil, set them on the windowsill, and wait for them to sprout. However, after several weeks, I have no sprouts. Why not? Well...it turns out I forgot to water the seeds. So, I hypothesize that they didn't sprout due to lack of water.
To test my hypothesis, I do a controlled experiment. In this experiment, I set up two identical pots. Both contain ten bean seeds planted in the same type of soil, and both are placed in the same window. In fact, there is only one thing that I do differently to the two pots:
One pot of seeds gets watered every afternoon.
The other pot of seeds doesn't get any water at all.
After a week, nine out of ten seeds in the watered pot have sprouted, while none of the seeds in the dry pot have sprouted. It looks like the "seeds need water" hypothesis is probably correct!
Let's see how this simple example illustrates the parts of a controlled experiment.
Explanation:
based on the lesson, explain how dna creates proteins
Answer:
During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink). The pre-mRNA is processed to form a mature mRNA molecule that can be translated to build the protein molecule (polypeptide) encoded by the original gene.
Explanation:
answer for electron arrangment worksheet
Reaction: C6H120, + 6
A -> 6
B + 6 H2O + energy
What molecules does letter B represent in the reaction above?
02
O CO2
ОАТР
O H2O
The reaction of cellular respiration involves the use of the glucose molecule in presence of oxygen to produce energy and carbon dioxide. Thus, option B is correct, as molecule B is carbon dioxide.
What is cellular respiration?Cellular respiration is a chemical method that involves the inhaled oxygen and use of the food molecules to release energy along with the water and carbon dioxide molecules.
Cellular respiration can be depicted by the reaction:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy
Therefore, molecule B is carbon dioxide.
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PLEASE ANSWER SOON SJSKSKS
Answer:
c and d
Explanation:
Neurological and perceptual speeds are generally higher in individuals with _________ intelligence.
A. general
B. lower
C. higher
D. inherited
Answer: C. higher
Neurological and perceptual speeds are generally higher in individuals with higher intelligence.
Neurological and perceptual speeds are generally found to be higher in individuals with higher intelligence. Thus, the correct option will be C.
What is Neurological and perceptual speed?Neurological speed can be defined as the speed or how fast the neurons react in the body, how fast a person acquires and processes the information. Neurological speed can be calculated through aptitude tests. These are the tests which are designed to predict a person's future performance and aptitude is the capacity of a person to learn.
Perceptual speed is the speed which indicates the automaticity as well as the efficiency of processing novel visual information and speed of decision-making of a person. Perceptual speed is typically assessed with the speeded tests that require the quick identification of specific targets from a set of stimuli in the body.
Neurological and perceptual speeds are generally higher in the individuals with higher intelligence.
Therefore, the correct option will be C.
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Which of the following is a description of trait of a country with a high
carrying capacity?
O A. Food grown on land near homes
B. Spending hours per day collecting water
C. Easy access to safe drinking water
O D. Very little access to refrigeration
SOMEONE PLEASE HELP ME IM STUCK ON THIS PLEASEEEE
Answer:easy access to safe drinking water
Explanation:
A healthy blood pH for humans is around 7.4. Lee's blood pH is 7.2. Which statement most likely describes Lee's
condition and treatment plan?
O Lee has type 1 diabetes and will receive insulin injections.
O Lee has hypothermia and will receive core warming therapy.
Lee has insomnia and will receive non-habit-forming medication.
O Lee has acidosis and will receive infusions of bicarbonate.
Answer:
He has acidosis
Explanation:
Hi, so i was wondering How long does Mars have to travel around Earth to make it's complete rotation?
Answer:
24 hours and 37 minutes
Explanation:
At Mars' orbital speed of 24 km per second, it takes the planet 24 hours and 37 minutes to complete one rotation. That is just a little more than a day on Earth.
Answer:
The Earth zips around the Sun at about 67,000 miles per hour, making a full revolution in about 365 days – one year on Earth. Mars is a little slower, and farther from the sun, so a full circuit takes 687 Earth days – or one Mars year.
Which process is part of the carbon cycle?
A. Photosynthesis
B. Transpiration
C. Evaporation
D. Fixation
Hey there!
Photosynthesis is part of the carbon cycle.
Plants absorb carbon dioxide & sunlight in the middle of the photosynthesis process and create glucose (a type of sugar).
I hope this helps,
have a wonderful day. :)
Photosynthesis is part of the carbon cycle. Therefore option A is correct.
Photosynthesis is a vital process in the carbon cycle, which is the biogeochemical cycle that describes how carbon is exchanged and recycled between the atmosphere, living organisms, oceans, and the Earth's crust.
During photosynthesis, green plants, algae, and some bacteria convert carbon dioxide (CO2) from the atmosphere into organic compounds, such as glucose, using sunlight as an energy source.
This process removes CO2 from the atmosphere, reducing greenhouse gas levels and helping to regulate the Earth's climate.
It is an essential step in maintaining the balance of carbon in the biosphere and plays a significant role in sustaining life on our planet.
Therefore option A Photosynthesis is correct.
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5. What type of energy is needed for active transport?
What is difference between acid and bases?
Definition. A substance, mostly liquid that donates a proton or accepts an electron pair in reactions. An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
(just if someone needs this i guess)
Answer:
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
Explanation:
An acid is a substance that releases hydrogen ions into an aqueous solution. A base is a substance that releases hydroxide ions.
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
What's the term that describes all the chemical reactions taking place in an orgasm
Answer:
Metabolism
Explanation:
I’ll mark brainly to the correct answer!
Cells use a molecule called
Choose...
to store and release energy like a battery. The energy is stored in chemical bonds between
Choose...
groups of the molecule, and the energy is released when the chemical bonds are broken.
Answer:
ATP & Phosphate
Explanation:
just took the quiz and got it right
HELP FAST, HELP ASAP
Which gases contribute to the greenhouse effect?
which one of these is the answer
nitrogen and helium
carbon dioxide and methane
carbon dioxide and helium
nitrogen and methane
Answer:
Overview.
Carbon Dioxide.
Methane.
Nitrous Oxide.
Fluorinated Gases.
Explanation:
Here you go
Answer:
carbon dioxide & methane
Explanation:
What is Endochondral Ossification?
Answer:
The formation of bone in which a cartilage template is gradually replaced by a bone matrix, as in the formation of long bones or in osteoarthritic ossification of synovial cartilage.
what is the purpose or function for ectoplasm in biology
Long lashes (L) are dominant over short eyelashes (l). Complete a Punnett Square crossing two parents that are both heterozygous for long eyelashes.
You are on a flight to Los Angeles, California. As the plane gets ready to land, it flies out over a large body of water. You look out the window and can see only water in the distance. You are over an ocean. Which ocean can you see?
Answer:
pacific ocean
Answer:
Pacific Ocean
Explanation:
Can someone help me please and thanks
Answer:
on witch one
Explanation:
Visual Reading Tool: Inside a Chloroplast
1. Fill in the reactants and products of the light-dependent and light-independent reactions of
photosynthesis.
Light-Dependent
Light-Independent
Reactions
Reactions
NADPH
ATP
THYLAKOID
ADP
STROMA
NADP
2. What is the NADPH responsible for?
3. Where do the "light" reactions (light-dependent) take place?
Answer:
A) Light dependent reactions
Reactants: light, H2O
Products: Oxygen gas
B) Light independent reactions
Reactants: C02
Products: Glucose
2. NADPH is an electron carrier which transfers electrons in the electron transport chain of photosynthesis
3. Light reactions occur in the THYLAKOID membrane.
Explanation:
As depicted in the image in this question, the photosynthetic process can be grouped into two stages viz; light dependent reactions and light independent reactions. The light dependent reactions, which take place in the THYLAKOID MEMBRANE of the Chloroplast, involves the synthesis of ATP (energy carrier) and NADPH (electron carrier) to be used in the next stage. The reactants of light dependent reactions are light energy from sun, and water (H2O) while the product is Oxygen (O2) gas.
In the light independent reactions, the ATP and NADPH are used to synthesize GLUCOSE as a product from Carbon dioxide (CO2) reactant.
2. The NADPH is is an electron carrier produced from the reduction of NADP+, which transfers or donates electrons to other molecules in the electron transport chain of photosynthesis. This is crucial in building of the proton gradient for ATP production.
3. The light reaction or light dependent reaction takes place in the THYLAKOID MEMBRANE of the Chloroplast.
The light-dependent reactions use ADP and NADP to produce NADPH and ATP (it occurs in the thylakoid membrane), whereas light-independent reactions use NADPH and ATP. NADPH is a cofactor.
The light-dependent reactions use sunlight and water (H2O) to produce oxygen (O2), NADPH and ATP, whereas light-independent reactions use carbon dioxide (CO2) NADPH, and ATP to produce simple carbohydrates (e.g., glucose).Both light-dependent reactions and light-independent reactions occur in the chloroplast: light-dependent reactions occur in the thylakoid membrane of the chloroplast, whereas light-independent reactions occur in the stroma of the chloroplast.Reduced nicotinamide adenine dinucleotide phosphate (NADPH) is a cofactor that transports electrons (e-) and protons (H+) released by sunlight into new carbon-carbon bonds and thus serves to produce simple carbohydrates (i.e., sugars).In conclusion, the light-dependent reactions use ADP and NADP to produce NADPH and ATP (it occurs in the thylakoid membrane), whereas light-independent reactions use NADPH and ATP to create carbohydrates.
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