All of life on Earth exists in a region known as a. an ecosystem. b. a biome. c. the biosphere. d. ecology.

A group of individuals belonging to a single species that lives together in a defined area is termed a(an) (A) population (B) ecosystem (C) community (D) biome (E) biosphere

Sketch the exponential growth curve of a hypothetical population.

Name the different levels of organization within the biosphere, from smallest to largest.

A group of populations living together in one area is a: A. species. B. community. C. ecosystem. D. biosphere.

Primary producers are organisms that a. rely on other organisms for their energy and food supply. b. consume plant and animal remains and other dead matter. c. use energy they take in from the environment to convert inorganic molecules into complex organic molecules. d. obtain energy by eating only plants.

Choose the letter that best answers the question or completes the statement. An object that produces its own light is a. luminous. b. coherent. c. opaque. d. translucent.

All of Earth's water, land, and atmosphere within which life exists is known as (1) a population (2) an ecosystem (3) the biosphere (4) a biotic community

Give an example of how a biotic factor might influence the organisms in an ecosystem.

How does the way that matter cycles through an ecosystem differ from the way that energy flows?

Explain how a nutrient can be a limiting factor in an ecosystem.

Explain how a nutrient can be a limiting factor in an ecosystem.

Ecologists have discovered that the seeds of many plants that grow in forests cannot germinate unless they have been exposed to fire. Design an experiment to test whether a particular plant has seeds with this requirement. Include your hypothesis statement, a description of both the control and experimental groups, and an outline of your procedure.

The series of steps in which a large fish eats a small fish that has eaten algae is a a. food web b. food chain c. pyramid of numbers d. biomass pyramid