Answer: (C) Because 95 percent of the planet is sea water. And, we still have not discovered 75 percent of it. :)
Explanation:
~~Hope this helped. can you mark me brainlylist~~
Answer:
Earth is covered with about 75% water. More accurately, the Earth is covered with about 71% water.
Explanation:
The oceans of the Earth are 91% of that 71%. About 2.1% is is frozen withing glaciers. About 2.5% of water is the freshwater. About 1.69% is made up of ground water.
What are the organs of the nervous system?
A. brain, spinal cord, nerves
B. brain, heart , lungs
C. skin, hair, nails
D. lungs, blood vessels, arteries
Answer:
A
Explanation:
I stuided this last year and what I found out was the nerves send a message to the brain and I forgot why the spinal cord is in there but I just know it is.
A (hydroelectric)
B (wind)
C (geothermal)
Answer:
Wind energy
Explanation:
flat lands and high winds
Answer:
my recommendation is B. wind.
Select the correct answer.
Which condition is a cause of impotency in men?
A.
undescended testicles that persist beyond puberty
B.
the inability of the penis to become erect
C.
a vasectomy, which is a surgical procedure to cut the vas deferens
D.
a low production of sperm in the testes
E.
the absence of the vas deferens in a male from birth
What “rule” or reasoning did you use to decide if something is a rock?
Answer: Anything that has an Origin, composition, and texture.
Explanation:
May be Minerals, feel rough or smooth, and can be hundreds or thousands of years old.
A rock is a naturally occurring compound which is made up of one or more minerals. They are found in the Earth's crust which undergoes transformation with the changing environmental conditions.
What qualities define a rock?
A rock can be defined as a solid mass of geological materials. The geological materials include individual mineral crystals, inorganic non-mineral solids such as glass, pieces broken from other types of rocks, and even the fossils.
The physical properties of rock include density, porosity, and permeability, etc. The mechanical properties of rock mainly include the elastic modulus, Poisson's ratio, and its strength. These parameters can be obtained through the laboratory experiments of core samples or by the in-situ tests.
A rock is a naturally occurring group or compound of one or more minerals that stays together. A rock is anything which has an origin, composition, and a texture.
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What are two types of fermentation
Answer:
There are two types of fermentation: alcoholic fermentation and lactic acid fermentation.
Explanation: branilest plz
In your own words explain how the structure of the cell membrane determines what can and cannot pass through the cell membrane.
Answer:
The cell membrane is semi-permeable. (or selectively permeable). The unique structure of the cell membrane allows small substances (like oxygen or carbon dioxide) to easily pass through.
Explanation:
The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group.
Answer:
Explanation:
Because the cell membrane is a selectively permeable membrane it decides what it will allow to pass through the membrane wall and what will not
What is the difference between glucose and ATP?
Glucose is a storable form of energy, while ATP is a usable form of energy.
ATP is a storable form of energy, while glucose is a usable form of energy.
ATP is only a usable form of energy, but glucose can be used and stored.
Glucose is only a storable form of energy, but ATP can be used and stored.
The main difference between glucose and ATP is that Glucose is a storable form of energy, while ATP is a usable form of energy.
Glucose is storable form of energy because it can't be used as energy until it can be broken down by mitochondria of the cell while on the other hand, ATP is the usable form of energy which we can get from the break down of glucose molecules. Our cells use ATP as a fuel to do various activities of the cell so we can conclude that in glucose, energy is present in stored form whereas ATP is used as energy in various activities.
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NEED HELP QUICK 15 POINTS
Mitosis is an Important process for maintaining homeostasis in organisms. Which of the statements below does NOT reflect a function of mitosis(answer choices in picture)
Answer: Choice I
Explanation:
Choice I only happens in meiosis.
What types of organisms have mitochondria
Answer:
sup ._.
Explanation:
The mitochondrion (/ˌmaɪtəˈkɒndrɪən/, plural mitochondria) is a semi autonomous double-membrane-bound organelle found in most eukaryotic organisms. Some cells in some multicellular organisms may, however, lack mitochondria (for example, mature mammalian red blood cells). A number of unicellular organisms, such as microsporidia, parabasalids, and diplomonads, have also reduced or transformed their mitochondria into other structures.
hope this helps
PLEASE HELP NOW PLESE
Answer:
1. true
2. false
3. false
4. true
Striated involuntary muscle tissue is classified as?
A. Skeletal
B. Cardiac
C. Smooth
D. Either Smooth or Skelatal
Answer:
B. Cardiac
Explanation:
Hope this helped, Have a Wonderful Day!!
the number of molecular collisions increases when
a) products are removed
b) more reactants are added
c) the reaction temperature is lowered
d) the reacting molecules have an incorrect orientation upon impact
Answer:
B..........................
Can anybody help me with #3, #4, and #8 you can use the letters more than once
Answer:
3.) Homologous
4.) Molecular biology
8.) Homologous structure
Hope this helps
What do you call a system that reverses the original stimulus
A. Positive feedback
B. Negative feedback
C. Stressor
D. Response
Answer:
Positive feedback
Explanation:
It is positive feedback since positive feedback always ends with counter-signaling/ suppresses the original stimulus. In other words, it goes against the original stimulus.
Answer:
Negative feedback
Explanation:
If right could i get brainliest...but if im wrong then im sorry!
If you have two pistons in a system, which exerts the larger force?
The smaller piston/ The larger piston
1. smaller piston
2. larger piston
Answer:
The larger piston
Explanation:
(just took the same test)
Answer:
The larger piston
Explanation:
Took the quiz and its correct. Hope this helps.
How is the structure of a nerve cell different from that of a red blood cell? Why do cells differ in shape and size? PLZ HELP!!...I WILL GIVE BRAILIEST!!
Answer:
Blood cells are a lot smaller than nerve cells and have a disc-shaped structure, both great traits for moving quickly through small spaces. Their disc shape also provides them with a big surface where lots of oxygen can enter the cell.
hope it helps
Answer:
See Below
Explanation:
Nerve cells:
They have a long fiber (axon) so they can carry messages up and down the body over long distances.
The axon is insulated by a fatty (myelin) sheath, the fatty sheath increases the speed of the nerve impulses along the neuron.
Branching at ends of the cell to connect with other nerve cells.
Red Blood Cells:
They contain haemoglobin, a red protein that combines with oxygen.
No nucleus to save space for more of this protein.
They are small and flexible so they can fit through narrow blood vessels
Biconcave shape, provides a large surface area.
Thin cell membrane to let things diffuse in and out easily.
Cells differ by shape and size for their specialized purposes.
In other words, cells have different shapes because they do different things. Each cell type has its own role to play in helping our bodies to work properly, and their shapes and sizes help them carry out these roles effectively.
Size (seen in both nerve cell is long red blood cell small)
Shape (red blood cell biconcaved nerve cell again slender and long with branching)
sodium (NA) and water (H2O undergo a chemical reaction that produces sodium hydroxide (NaOH) and hydrogen gas (H2). Which equation represents this chemical reaction
Answer:
There are no options in this question, however, the equation can be provided. The answer is:
2Na + 2H2O --> 2NaOH + H2
Explanation:
This question is deacribing the equation between sodium (Na) and water (H2O) to produce sodium hydroxide (NaOH) and hydrogen gas (H2). The equation originally is as follows:
Na + H2O --> NaOH + H2
From the above equation, one would notice that it is not balanced because the number of atoms of each element is not the same on both sides of the equation. Hence, to balance the equation, a coefficient is used to make sure the same number of atoms of each element are on both sides.
We have;
2Na + 2H2O --> 2NaOH + H2
For every 1 carbon and every 1 oxygen in a carbohydrate, how many hydrogens are there?
2 kjdnkjanbbbbbbbbbbbbbbbbbbbExplanation:
1-2 Paragraphs About The Background Of Reaction Time Slowing Down Once You Get Older
Answer:
Reaction times slow with age, and they correlate with scores on tests of higher cognitive functions many of which also deteriorate with age. The age-related changes in reaction times account for a substantial proportion of the age-related variance in higher cognitive functions (e.g., Deary, 2000. 2000Reflexes do slow with age. Physical changes in nerve fibers slow the speed of conduction. ... But the effect of age on reflexes and reaction time varies greatly from person to person. You can actually slow down—even reverse—the effects of aging by staying physically active.The next time some twenty-something complains that they feel old, you can reassure them that their feelings are, in fact, not ridiculous. After studying 3,305 people ages 16 to 44, researchers found that the brain's response time begins to decline at age 24.
Explanation:
What type of research method would best answer the question “How many rivers in Florida have nitrate pollution in them?”
Answer:
Field study
Explanation:
I took the quiz and got it right. Hope this helps :)
The type of research method that would best answer the given question is field study. The correct option is C.
What is field study?Field studies are research activities that take place outside of your office or lab, in the context of the user.
There are numerous field-study methods and activities to choose from. Field studies also differ significantly in terms of how the researcher interacts (or does not interact) with participants.
Field research is a qualitative research method that involves observing and interacting with people in their natural settings in order to understand and interpret the social interactions of groups of people, communities, and society.
Field studies provide students with first-hand experiences that promote critical thinking, long-term retention, transferability, positive attitudes toward science, appreciation for nature, and increased scientific curiosity.
Field study is the type of research method that would best answer the given question "How many rivers in Florida have nitrate pollution in them?”
Thus, the correct option is C.
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Your question seems incomplete, the missing options are:
A. relational study
B. cause and effect study
C. field study
how do molecules pass through the cell membrane
Answer:
The small molecules such as water and carbon dioxide can easily or directly pass through the membrane because they are neutral and so small. the movement of water through the membrane is referred to as osmosis. water can also pass through the membrane through channel protiens called aquaporins (AQP).
Explanation:
Explain how the electron transport chain makes ATP.
Answer:
t
Explanation:
While Glycolysis and the Citric Acid Cycle make the necessary precursors, the electron transport chain is where a majority of the ATP is created. The Electron Transport Chain makes energy ... At the end of the chain the electrons are taken up by oxygen molecules to make water. This is why oxygen is known as the final electron acceptor.
Answer:
Explanation:
during electron transport, energy is used to pump hydrogen ions across the mitochondrial inner membrane, from the matrix into the intermembrane space. A chemiosmotic gradient causes hydrogen ions to flow back across the mitochondrial membrane into the matrix through ATP synthase, producing ATP
I will give out 90 points. Please answer!!
DNA Polymerase is used to (select all that apply) the answer is not just “synthesize the daughter strand)
-“read” the template strand
-synthesize the daughter strand
-unzip the template strand
-cut the template strand
-cut the daughter strand
IS THE ANSWER 2-5 and not 1??
DNA polymerase synthesizes the daughter strand along with reading the template strand. The correct option is A and B.
What is DNA polymerase?The primary enzyme that catalyzes the linking of the 3′ hydroxyl group of the end nucleotide to the 5′ phosphate of the nucleotide to be added is DNA polymerase.
DNA polymerase synthesizes the daughter strand along with reading the template strand.
Thus, the correct options are A and B.
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why does an ecosystem have a carrying capacity?
Submarines use a technology called "sonar" that bounces sound waves off of objects in the water. The sonar operators measure how long it takes for the signal to return to them. The information they get from sonar allows them to know
A.
how massive objects in the water are
B.
if objects in the water are man-made
C.
how far away objects in the water are
D.
what color objects in the water are
Answer:
c......................
Answer:
C
Explanation:
how far away objects in the water are
The unique shape that a mineral grows into is called its…
Answer:
Crystal form refers to the geometric shape of mineral crystals. Crystal form is caused by the symmetrical, three-dimensional arrangement of atoms inside the mineral.
Explanation:
Explain why reintroducing wolves changed the ecosystem of the park?
WILL GIVE BRAINLIEST
Answer:
After 70 years without wolves, the reintroduction caused unanticipated change in Yellowstone's ecosystem and even its physical geography. ... The healthier bear population then killed more elk, contributing to the cycle the wolves started.
Explanation:
The reintroduction of wolves had several positive effects on the ecosystem.
What are the effects of reintroduction of wolves?The reintroduction of wolves caused a trophic cascade of events in the Yellowstone national park. This resulted in an increase in the population of beavers and also brought back several forms of vegetation.
The killing of wolves in the 1930s resulted in the shifting of predatory pressure on the elk population. But, they were much less active in winter. They browsed on cottonwood plants and aspen.
But now, the predatory pressure came back on wolves. This keeps the elks more active. This also resulted in an increase in vegetation.
The reintroduction of wolves also resulted in the increase in the population of beavers because of the recovery of willow strands reflourished due to the activeness of the elk.
Therefore, the reintroduction of the wolf population greatly impacted the ecosystem of the Yellowstone national park causing a ripple of positive effects.
Read more about the ecosystem, here
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which of the following statements best explains why plants wilt
Answer:
needs more context bro
Why is secondary succession less successful in tropical rainforests?
What is the process of monomers being chained together called?
A. Polymers
B. Polymerization
C. Monomer regeneration
D. Duplication
Answer: Polymerization
Explanation: The linking up of monomers is called polymerization. It is the long chains that give polymers their unique properties.
