Answer - The living species comprise more number of hydrogen atoms in comparison to any other atoms, still 65 percent of the usual organism's mass is oxygen. The prime reason for this is that an atom of oxygen comprises sixteen times more mass in comparison to a hydrogen atom. hopes this helps :)
Answer: The introduction of Caulerpa, also known as killer algae, into California was ultimately the result of the aquarium trade in exotic, nonnative aquatic species.
Explanation: answer on edg is b
<span>a. direction in which they carry impulses</span>
Answer:
True
Explanation:
This is because Cephalochordates are the recent ancestor of lancelets. They have muscle segmented Brook.The lancelets are mostly marine organisms that live in shallow, tropical and temperate oceans. The lack a well differentiated head region but they have brain region.