Which trophic level is most vulnerable to extinction?

a. producer level

b. primary consumer level

c. secondary consumer level

d. tertiary consumer level

c. secondary consumer level

Explanation:

Most secondary extinctions are due to direct bottom‐up effects: consumers go extinct when their resources are lost. Secondary extinctions due to trophic cascades and disruption of predator‐mediated coexistence also occur.

Tertiary consumers

Explanation:

The most vulnerable tropic level that can extinct is tertiary consumer. The tertiary consumer level consists the group of animals that have limited area for living, limited food for eating.

The animals on the tertiary level is more prone to extinction. They are more susceptible to disease, as they dependent on the smaller animals for their food.

So, they are more vulnerable to extinction.

your answer is "the 1950's"

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.