Answer:
Populations have variation in traits due to random mutation, crossing over and environmental conditions.
It’s D “doing 100 sit ups in 5 minutes”
<span>Your skeleton is internal, which means it is contained inside of you. A grasshopper has an external skeleton, or exoskeleton, with everything contained inside it. </span>
It tends to resist rising.
What holds the two strands of DNA molecules to each other. Hydrogen Bonds
