Answer:
The brackish water adaptation is clearly necessary because the aquatic snails need to live in an environment in which the river system has a higher quantity of salt than what land snails can take. I can determine that the environmental factors influenced the inherited adaptations because the second population has a higher salt concentration in their habitat compared to the initial population.
Answer:
it illustrated natural selection because the most favorable traits live longer than the unfavorable traits.
Explanation:
Answer:
the rock cycle that's a thing?
