B) Embryonic stem cell research requires the use of human embryos. Its an unethical dilemma.
Answer: Option B.
Biogeographical
Explanation:
Biogeographical evidence is the evidence that provide information of organisms distribution over geographical areas. It provide information on how and when the organisms evolved and common descent.
Frombthe question, biogeographical evidence will help Darwin make his observation
deforestation- making room for new buildings by clearing trees and forests
pollution- from factories, litter, and bad hygiene
The eye condition is glaucoma.
