Question

question 8 of 10
what type of organisms first move into an area after a primary disturbance?
a. animals with long lives
b. small organisms
c. organisms that reproduce slowly
d. large predators

Explanation:

After a primary disturbance (like a volcanic eruption creating new land), small organisms (such as lichens in a classic example of primary succession) are the first to colonize. They have characteristics (like being able to tolerate harsh conditions, reproduce relatively quickly) that allow them to establish in an area with no soil or very poor - quality substrate. Large predators (D) need a complex food web which isn't present initially. Organisms that reproduce slowly (C) would not be the first as they can't quickly take advantage of the new environment. Animals with long lives (A) also require more developed ecosystems (with established food sources, shelter etc.) that aren't available right after a primary disturbance.

Answer:

B. Small organisms