Question

2 all the biotic and abiotic factors in a marsh form a. a niche. b. a population. c. an ecosystem. d. a biosphere. 3 when fruits or vegetables are imported into the united states from a foreign country, they are always very closely inspected for insects, even though most insects are not really harmful. why is the inspection done?

Explanation:

1. An ecosystem is defined as all the biotic (living) and abiotic (non - living) factors interacting in a particular area. A niche is the role of an organism in its environment, a population is a group of the same species, and the biosphere is the global sum of all ecosystems. So, all biotic and abiotic factors in a marsh form an ecosystem.
2. The inspection of imported fruits and vegetables for insects is to prevent the introduction of invasive species. Invasive insects can disrupt local ecosystems by preying on native plants, competing with native insects, or introducing diseases to which native species have no immunity.

Answer:

1. c. an ecosystem
2. To prevent the introduction of invasive insect species that could disrupt local ecosystems.