Answer:
A. Cell wall and chloroplast
B. Nucleus (the dark grey circle)
Explanation:
<span>Messages to the brain travel along the nerves, which are strings of long thin cells called neurons</span>
A cladogram is a type of graph that shows how closely related different types of organisms are in an evolutionary context. It resembles a tree, with various organisms being placed at the end of each branch. If two organisms have a close common branch, they are more closely related than those who have more distant branches. Since DNA, or corresponding protein sequences are more similar in closely related species, and more different in more distant species, a biologist can use those sequences to numerically determine how closely related three species are.
Nutrients Pollution
Surface Water Pollution
Oxygen Pollution
Valves, they are like flaps of muscle that keeps the blood in its place util its ready to be pumped along.
