Question

question 18: the term \biotic\ refers to: a) nonliving components of an environment. b) living components of an environment. c) the study of ecosystems. d) changes in atmospheric pressure. question 19: which level of ecological organization is the smallest? a) biosphere b) population c) organism d) community question 20: which of the following is an example of interconnectedness in ecology? a) a rabbit eating grass and providing food for a fox. b) a rock providing a habitat for moss. c) the water cycle supplying rivers and lakes. d) all of the above.

Explanation:

• Question 18: Biotic factors are living organisms in an environment.
• Question 19: The organism is the basic unit, smaller than population, community, and biosphere.
• Question 20: All given options show different types of ecological inter - connectedness: predator - prey relationship, habitat provision, and water cycle's role in ecosystems.

Answer:

Question 18: B. Living components of an environment.
Question 19: C. Organism
Question 20: D. All of the above