how to ensure validity in a investigation​

Answers

Answer 1

Answer:

s ethrtzhzrt hj fxtj fxtExplanation:

jxft jxtfj

Answer 2

Answer:

through the scientific method until reaching a conclusion


Related Questions

Which statement best compares momentum and kinetic energy

Answers

Answer:

Momentum is a vector quantity and kinetic energy is a scalar quantity.

Explanation:

How do genes determine the traits of an organism?

Answers

Answer:

the Gene's make up every distinct feature about a creature like its hair color its ear size its tail size its teeth and especially its gender

Traits are determined by genes, and also they are determined by the interaction with the environment with genes. And remember that genes are the messages in our DNA that define individual characteristics. So the trait is the manifestation of the product of a gene that is coded for by the DNA

What things do plants use to get food matter?




HELP ASAP​

Answers

Answer:

water and sunlight (for sure)

Answer:

Plants are called producers because they make their own food

Explanation:

Plants use minerals and water from the ground and their leaves absorb Carbon Dioxide (CO2) from the air.They convert these into food by using sunlight

Hope this Helped :)

Groundwater _____. forms when precipitation seeps into the soil exists above the earth's surface is impossible to pollute is not a usable water source for humans

Answers

Answer:forms when precipitation seeps into the soil

Explanation:

Answer:

It's B

Explanation:

I got it correct when I did it on my quiz on oddseyware.


Plants and animals are multicellular organisms made of organ systems that work together to maintain homeostasis. Body systems
are made of organs and organs are composed of tissue. Tissues are groups of cells that work together to perform functions.
Examine each of the examples below. Which of these are organs found in plants or animals? Select ALL that apply.
A
A
)
epithelial
B)
eye
leaf
D)
stem
vascular

Answers

D) stem vascular and A

The organs found in plants or animals is stem vascular. Therefore, option (D) is correct.

What are the features of the stem vascular?

A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports water and dissolved substances between the roots and the shoots in the xylem and phloem, stores nutrients.

The vascular system of plants, complete with xylem and phloem, fills both purposes. Stems, along with roots, also store food for the plant. Pith, a tissue that lies in the center of the stem.

A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in the stem, which exists in two forms: xylem and phloem.

Learn more about stem vascular:

https://brainly.com/question/12889528

#SPJ2

which option is better and why?

Answers

Answer:

b

Explanation:

The photos below show plant cells that are specialized for performing
photosynthesis.
Which part of these plant cells carries out this function?
A. Cell wall
B. Chloroplast
C. Cell membrane
D. Cytoplasm

Answers

The Chloroplast products photosynthesis
It’s B. Chloroplast

The excretions of living organisms are best categorized as?

Answers

Answer:

The excretions of living organisms are best categorized as biotic factor in the environment.

4. Many commercial grow lights deliver light mostly in the yellow/red part of the spectrum, along with smaller portions of all other visible light. Why would a grow light such as this promote plant growth and reproduction (flowering and fruiting) or is this a con job?

Answers

Answer and Explanation:

These lights can, in fact, promote the growth and reproduction of plants.

This is because growth, chlorophyll production, flowering and fruiting only occur if the plant is exposed to a band of light with 640-720 nm. Plants receive this band of light naturally through the sun, but when solar energy is not available it is possible to use cultivation lamps that emit this type of light band, which corresponds to the yellow/red spectra.

I need help with this question

Answers

Answer:

Plz mark brainliest ;)

Explanation:

Lysosomes break down macromolecules into their constituent parts, which are then recycled. These membrane-bound organelles contain a variety of enzymes called hydrolases that can digest proteins, nucleic acids, lipids, and complex sugars.

What are two ways in which plant eating animals such as cow depend on water.

Answers

Well, since the cow is a plant eating animal, the cows depend on water to keep the plants healthy and alive.
Cows also need water to stay hydrated just as much as humans.

Which is a reason why wetlands are important?
O They move water to higher ground during flooding.
O They filter pollutants out of water.
O They are estuaries.
O They provide minerals.

Answers

Answer:

They are estuaries

Explanation:

The answer is c They are estuaries

Acid precipitation may change lakes by a. making phosphorus more available to plants, thereby increasing productivity. b. making nitrogen more available to plants, thereby increasing productivity. increasing populations of nitrogen-fixing microorganisms. . accelerating the carbon cycle within lakes. causing the local extinction of species that cannot tolerate

Answers

Answer:

causing the local extinction of species that cannot tolerate.

Explanation:

Acid precipitation may change lakes by causing the extinction of local  species that cannot tolerate the acidity of the water. The acid precipitation damaged the skin of the aquatic organism as well as internal body structure of various organisms. Acidic nature of water is not good for all organisms except some resistance organisms due to their adaptability so we can conclude that extinction of species occur that has no resistance.

Positive feedback
A)bring the change back to normal
B)brings the change further away from the normal

Answers

Answer:

B)

Explanation:

"Positive feedback encourages and intensifies a change in the body's physiological condition, driving it farther out if the normal range."

What are the organelles that a plant cell has that is different than the animal cell? Explain each one

Answers

Explanation:

A plant cell has cell wall which is otherwise absent in animal cell

cel wall is a freely permeable membrane which allows the entry of all substances . cell wall basically gives rigidity to the cell and protects the cell .

Hope this helps you dear :)

Which statement best describes the limits of science?
O A. Science can answer only mathematical questions.
B. Science cannot answer questions about the natural world.
C. Science can answer any question.
D. Science cannot answer questions about what people should do.

Answers

Answer:

A

Explanation:

science can answer only mathmatical questions

Correct answer to your question is A

Is the chief justice of the supreme court the commander in chief of the military

Answers

No , The Chief Justice of the Supreme Court is not the Commander in Chief of the Military .

The diagram represents a process used to modify bacterial cells.

Bacterial DNA х Y o Foreign DNA In the diagram, arrows labeled X and Y represent the use of

(1) clones (2) receptors (4) enzymes (3) genes​

Answers

Answer:

send a pic of the diagram

which player will generate the most FORCE??!!!

Answers

Answer:

Nick Boyle as 270 pounds is higher than others!

Explanation:

Answer:

Logan Thomas

Explanation:

what branch of biology deals with the study of herdity amd variation​

Answers

Answer:

Genetics.

Explanation:

Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms.

which best explains a system


A structure that carries out a specific function


B group of organs that carry out different function


Croup of organs that work together to carry out a specific function


D way that organism operate​

Answers

Answer:

C

Explanation:

Group of organs that work together to carry out a specific function - > Organ system

Which of the following can have an affect on rate and/or depth of respiration? Select all that apply.

Answers

Answer:

Chemical- carbon dioxide, hydrogen ions and oxygen levels are the most important factors that regulate respiration.

Answer:Chemical- carbon dioxide, hydrogen ions and oxygen levels are the most important factors that regulate respiration. ... If CO2 levels increase, the respiratory center( medulla and pons) is stimulated to increase the rate and depth of breathing.

Explanation:

The cell membrane is described as being fluid because:
A. the phosphate groups move between fatty acids.
B. the membrane lets materials pass through it.
C. the fatty acid chains are inside it.
O D. the phospholipids move from side to side.

Answers

Answer:

D

Explanation:

The fluid mosaic model got its name because the plasma membrane resembles a mosaic formed by proteins embedded in a fluid of lipids. ... In the fluid mosaic model, the plasma membrane is basically composed of a lipid bilayer in which proteins are inserted.

What kind of fossil is a wooly mammoth found frozen in arctic ice?
a.Cast fossil b.Mold fossil c.Preserved fossil d.Trace fossil

Answers

Answer:

cast fossil

Explanation:

Question 3 of 34
Which of the following explains how polar molecules form?
O A. The two atoms in a bond share electrons equally.
B. One atom transfers its electrons to another atom.
O C. Electrons are more attracted to one of the atoms involved in a
bond.
O D. Protons are more attracted to one of the atoms involved in a bond.

Answers

D is the right answer

Sickle cell anaemia is an inherited autosomal recessive
condition caused by a mutation in the haemoglobin
subunit beta (HBB) gene. A male and female who are
phenotypically normal, discover through genetic testing
that they are both carriers of a HBB mutant allele. What is
the probability that their first child will be biologically
female and phenotypically normal?

Answers

Answer:

1/8 (12.5%)

Explanation:

An autosomal recessive disease is an inherited disease in which an individual need to receive both defective alleles at the same gene locus to be expressed in the phenotype. In this case, both parents are carriers of the recessive mutant allele associated with the sickle cell anaemia trait, thereby both parents are heterozygous, ie., each parent has one copy of the normal allele 'H' and one copy of the defective mutant allele 'h' associated with this condition. In consequence, their first child has a 1/4 (25%) chance of having sickle-cell anaemia. Moreover, the chance of having a girl is 1/2 and the chance of having a boy is 1/2, thereby the final chance of having a girl sickle cell anaemia individual is 1/4 x 1/2 = 1/8 (12.5%).

- Parental cross for sickle cell anaemia trait = Hh x Hh >>

- F1 = 1/4 HH (normal); 1/2 Hh (normal); 1/4 hh (sickle cell anaemia) >>  

- Sex proportion of sickle cell anaemia individuals =  1/8 female sickle cell anaemia individuals + 1/8 male sickle cell anaemia individuals (1/8 + 1/8 = 1/4)

How did the mass extinction that killed the dinosaurs affect the evolution of mammals?

Answers

Answer:

With dinosaurs no longer eating them, mammals made quick evolutionary strides, assuming new forms and lifestyles and taking over ecological niches vacated by extinct competitors. ... Sixteen mammal species were discovered, with skulls and other bones fossilized after being buried in rivers and floodplains.

Explanation:

Which of the following would be an accurate food chain that could be found in the
tropical community?

A) cougar --> turtle --> banana

B) insect --> frog --> ocelot --> parrot

C) fruit --> turtle --> cougar

D) vegetable --> insect --> mushroom

Answers

Answer: B

Explanation:

The animals that live in tropical areas are in option B. Cougars can not live in the tropics, they live in the cold biomes. In the tropics, there are many insects, and frogs eat them. Ocelots eat the frogs, and the ocelots are eaten by parrots. The rest of the options are valid food chains, but they would not function in the area of tropics. The answer to the question is option B.

I am sure that it is answer b

1. Calculate the volume occupied by 0.845 mol of nitrogen gas at a pressure of 1.37 atm and a temperature of 315 K *

Answers

Answer:

[tex]PV=nRT \\ 1.37 \times V = 0.845 \times 0.083 \times 315 \\ V = 16.125 \: {cm}^{3} [/tex]

According the cell theory, can you create a cell by combining molecules in a laboratory?

Answers

Answer:

only if you have the materials

Explanation:

cells are generated from duplicating, so you'd have to have every single part that made up a cell and put it together which would require microscopic precision

Other Questions
will mark as brainliest:) A Ferris wheel has a maximum height of 111 feet and a minimum height of 5 feet. it takes 80 seconds for the wheel to make a full rotation. it reaches maximum height for the first time at t=8. give an equation h(t) that gives the height of the rider at t seconds. how high is the rider after 23 seconds? Question 1 (10 points)SavedA variable'sindicates the type of data that the variable will hold.a) nameb) data typec) scoped) value Which option is the best example of omission?A. Writing an essay or article using somebody else's wordsB. Quoting an expert but leaving out important wordsC. Making claims that are backed up by faulty evidenceD. Taking credit for some Which of these is an example of typing at a rate of 42 words per minute?A typing 21 words in 2 minutesB typing 84 words in 3 minutesC typing 210 words in 5 minutesDtyping 400 words in 10 minutes Can someone help me? It's urgent and thank you! A Three-Point TurnChapter 1"You know, hardly anyone ever needs to do a three-point turn anymore," said Justin, trying to help Becky calm down."Oh, so it's not a useful skill AND I am probably going to fail the driving test because I can't do it anyway," Becky said, raising her voice for emphasis. "That should make me feel like a million bucks when I flunk."Justin was riding with Becky so she could take her driving test. He had volunteered for the job because he thought she would be less nervous with him than with their mom, but so far, he wasn't sure he was making any difference."Slow down, your turn is coming up here," he said, looking ahead."I know, I know," she replied, "I've been here before rememberthe last time I flunked."Justin was pretty sure if he had let her miss the turn, things would only have deteriorated further, but he wasn't sure he was fond of being the scapegoat for Becky's anxiety."Listen, you need to take a few deep breaths," he said, hoping he could help her at least relax a bit. "Being nervous won't help you with the three-point turn or anything else you have to do. Hey, did you just take that turn without your turn signal on?" This was going to be harder than he thought."Stop yelling at me," Becky replied, clearly frustrated, "I can't concentrate.""Look, you need to stop and get yourself together here," Justin started. "It is not just about passing the driving test. I don't want to get in an accident, so pull into that parking lot."Becky drove into the office building's parking lot where Justin was pointing. Justin knew they were less than a mile from the licensing office, and if she continued in this condition, he'd be having this same discussion three months from now when she tried the test again for the third time."You need to get a grip," he started after she put the car in park, "because you have studied and practiced driving all year. You know this stuff inside and out, backwards and forwards. What are you so nervous about?""I don't know, I don't know," Becky wailed, resting her head on the steering wheel. "I just get so tired of failing."Listening quietly as Becky sobbed, Justin realized this was about much more than a driving test. He also knew if he didn't find a way to help Becky things would just get worse.Chapter 2Justin took a deep breath and collected his thoughts. Becky was an unbelievably consistent straight-A student. It was Justin who got the bad grades in school, and Justin who had to repeat every math class he'd ever taken. It was Justin who wished he could get the grades Becky got. Some things came easier for Justin: He was athletic, handy with tools, and good at making the best of whatever life threw at him. Mom called him her "lemons into lemonade" kid. But for the most part, Becky succeeded easily, whereas Justin had to work and work to just get a passing grade.Rather than having Becky catalogue all the things she supposedly "failed" at, Justin decided to try an alternative approach, one that wouldn't remind him of all the ways he had failed."Okay, Becky, let's assume for a moment you fail this test again. What is the worst thing that could happen?" he asked."I would be the oldest kid at school without a license and be humiliated," she replied. Justin thought he heard a bit of panic in her voice but continued with his plan."Yes, but won't we still have to drive to school together for at least one more year anyway?" he asked."Yes, but..." she started."And who will know, if you don't tell anyone except your friends, that you don't have your license? You know Mom can't afford another car just for you, right?""Yes," she said quietly."So what difference does it make, really," he said. "Another three months to wait in the grand scheme of your life doesn't seem like all that long, right?""I suppose not," she said.Justin could tell she was breathing more slowly now. "Besides," he said, "I would miss all the practice driving with you," and for good measure he reached over and pinched her arm."Ow," she said, hitting back at him, "that hurt.""So let's go do this, okay?"Okay," she said. Becky cranked up the car, backed slowly out of the parking spot and drove up to the parking lot's exit. Justin noticed, as they waited for the traffic to clear, that she had remembered the turn signal.Read this line from Chapter 1:"Stop yelling at me," Becky replied, clearly frustrated, "I can't concentrate."Which of the following has a more negative connotation than frustrated? Concerned Distraught Puzzled Reassured The area of a circle is 810 m2. What is the circumference, in meters? Express youranswer in terms of 7. Abhasra and Aliyah are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of shiny wrapping paper. Abhasra sold 10 rolls of plain wrapping paper and 4 rolls of shiny wrapping paper for a total of $170. Aliyah sold 5 rolls of plain wrapping paper and 3 rolls of shiny wrapping paper for a total of $105. Find the cost each of one roll of plain wrapping paper and one roll of shiny wrapping paper. Which of the following terms can be combined in this expression?13 minus x over 5 + 6.2 y + 20.5 x minus 3 over 8 yNegative 13 can be combined with 20.5.6.2 y can be combined with 20.5 x.6.2 y can be combined with Negative 3 over 8 y.Negative x over 5 can be combined with Negative 3 over 8 y. i only ever met one of my grandparents, and that was my dad's mother How many centimeters are there in 0.5 inches? Need answers for blank PLSSS HELPP FAST pls pls Name the following polynomial: 5n^3+8n^2 + 3n +7 If you are __, you will need to complete 50 hours of driving practice to get your driver's license.A. under 21B. under 18C. under 25 PLEASEE HELP HURRYYYYYY PLEASE help my homework pls. Use the grouping method to factor this polynomial.x^3 + 2x^2 + 12x +24A. (x^2+6)(x+2)B. (x^2 +2)(x+6)C. (x^2 +2)(x+12)D. (x^2 +12)(x+2) Someone help me with this!!! help is very much needed Quick Cleaners, Inc. (QCI), has been in business for several years. It specializes in cleaning houses but has some small business clients as well.a. Issued $21,000 of QCI stock for cash. b. Incurred $840 of utilities costs this month and will pay them next month. c. Paid wages for the current month, totaling $2,600. d. Performed cleaning services on account worth $3,800. e. Some of Quick Cleaners equipment was repaired at a total cost of $300. The company paid the full amount at the time the repair work was done. Required:Prepare journal entries for the above transactions, which occurred during a recent month. When species become challenging to classify, what is the most accurate technology for their identification? DNA sequencing DNA electrophoresis DNA amplification DNA barcoding DNA replication