Question

If there is no variation in shell thickness within a population of snails, and no mutations occur, what happens to shell thickness in response to crab predation?.

Answer 1

Shell thickness does not evolve in the population. Shell thickness evolves for some snails in the population.

Predators

They are animals that hunt other animals for their food

Crab predators

There are many animals that are crab predators; among which include:otters, alligator, fish and even shrimp (they eat the larvae).

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