Answer:
As a cell grows, its surface area-to-volume ratio decreases
Answer:
It needs the spines for protection
Explanation:
The cactus would develop the spines as a form of protection to protect itself from being consumed and to survive longer.
Answer:
adaptations; anything ( food storage, movement, thermoregulation)
Explanation:
Characteristics that animals inherit to help them survive in their environment are called adaptations.
Along with water conservation, animals also have unique characteristics for food storage, movement, etc; (anything that is a regulatory thing seems to fit here).
