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
DD and Dd: both produce a dominant trait
Answer:
sweat glands
Explanation:
This is because sweat regulates body temperature. When you are hot, you sweat and the sweat cools you down.