Respuesta :

Answer:

reason of selective pressure

Explanation:

Selective pressure is due to the factors that hinders the survival of any living being. These limiting factors could be non-availability of food, Mating issues, any natural calamity etc. Here, the selective pressure on birds is due to the lack of food as it is given that all the fruits were effected by a disease and hence cannot be fed upon by the birds.

If a plant disease kills all the fruit, then this change could become a selective pressure on the birds.

What is selective pressure?

Selective pressure is a contain imposed by the environment for the survival of one population.

This type of constraint may hamper the survival or reproduction of one species in a given environment.

In conclusion, a plant disease could become a selective pressure on the birds.

Learn more about selective pressure here:

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