Plants on Earth provide food, some even provide shelter to some animals, and plants such as trees provide oxygen to the environment.
Protects brain and spinal cord from trauma, as well as supplies nutrients to nervous system tissue. It also removes waste from cerebral metabolism.
Answer:
Explanation: Guard cells in the plants prevent water loss from it in cases of soil dryness or high temperature by closing themselves. If this does not happen, water will keep leaving the plant by the process of transpiration in these harsh conditions and the plant will not have the important medium for the homeostasis process to continue.
I guess I would say b or d. Because concluded results change over time with better technology and some solutions dont work.
