Anatomical or molecular homologous structures
Use carbon dioxide and release oxygen gas
Answer:
D
Explanation:
When a population is genetically diverse there is a higher probability for some individuals in that population to survive during harsh conditions such as drought due to their highly resistant genes.
Answer:
Reptiles have scales, and their skin is dry. Amphibians do not, and their skin is often moist with mucus, which keeps them from drying up.
Answer:
because,
if somethinggoes wrong it can be dangerous to all