Blood<span> flows to the </span>kidneys through<span> the right and left renal arteries. Inside each </span>kidney<span> these branch into smaller arterioles. The </span>blood<span> is at very high pressure and flows </span>through the arterioles into tiny knot of vessels called the <span>Glomerulus.
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:')
I do believe the answer is B
My Answer: Vestigial organs
Why?: " Vestigial organs are physical structures that were fully developed
and functional in an ancestral group of organisms but are reduced
and unused in the later species."
Hope I helped! :D
The answer: Yes, because plants photosynthesis to absorb Carbon Dioxide and convert it in to Oxygen. We humans breathe the oxygen that is produced from plants.
The answer is D
One way to remember this is when you are building a bridge there is one piece right in the middle that keeps the whole thing from collapsing that is called the key-stone. If a keystone species goes extinct then the rest of the ecosystem will crumble around it.
