Answer:
The evolution of the heart is based on the separation of oxygenated blood from deoxygenated blood for efficient oxygen transport. pisces have a dual chambered heartwhile reptiles and amphibians are having a three chambered finally aves and mammals have four chambered hearts.
Explanation:
please mark as brilliant answer
This would be a covalent bond :)
They move by osmosis(a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.).
Answer:
Phloem cells are hollow and nonliving, and they form a continuous pipeline that transports sugars.
hope this answer is correct ...
X or y chromosome from the male, added to the X chromosome from the female
