Answer:
D
Explanation:
The other options are illogical and D is the only one relating to plants.
Answer: The weather conditions prevailing to in an area over a long period of time.
Explanation: ...
I believe the answer to your question is <span>Glial cells</span>
Darwin finally consolidated all of his observations into his famous book
On The Origin of Species, drastically and controversially altering the
scientific view on the biological origins of life. I learned this a little while ago in my school, I kept notes!! Hope this helps!! <3