Option A, B, D are only applicable for steroid hormones ( hydrophobic)
So the answer is C
C: lack of water during long periods..
Answer:
A cladogram is a diagram used to represent a hypothetical relationship between groups of animals, called a phylogeny. A cladogram is used by a scientist studying phylogenetic systematics to visualize the groups of organisms being compared, how they are related, and their most common ancestors.
<span>The oldest known vascular plants in the northern hemisphere are Devonian
This is true</span>