Answer:
B
Explanation:
looking at this rock, there are NO layers, and all other choices describe having layers, so B
Answer:
A. A weak or strong current
Explanation:
D. is inccorect because rivers are always freshwater
C. is incorrect because seawater is salt water
B. is incorrect because rivers have waterflow.
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<span>Right atrium
The answer here requires you to know what the systemic circuit is. That's the circuit that takes oxygenated blood from the heart to the rest of the body and then returns the deoxygenated blood to the heart. With that in mind, let's look at the 4 chambers of the heart.
Left atrium gets oxygen rich blood from the lungs and pumps it into the left ventricle.
So we know this isn't the correct chamber and we can also ignore the left and right ventricles as well since they receive blood from their respective atriums.
That leaves only the right atrium and it's definition is
Right atrium gets oxygen poor blood from the body and pumps it into the right ventricle.
And that does sound like the correct chamber to me. So the answer is "right atrium"</span>
Answer:
Hi, there the answer is B.They make their own food through photosynthesis.
Explanation:
They are autotrophs - meaning they create their own energy from inorganic materials. They do this through a process called PHOTOSYNTHESIS.
Answer:
c) organisms must eat greater amounts at each lower level
Explanation:
hope this helps