Single-Celled Organisms That Are Abundant in Even Extreme Environments and That

question 75

Multiple Choice

Single-celled organisms that are abundant in even extreme environments and that do not require a host cell to reproduce are called ____.

• A) carcinogens
• B) mutagens
• C) parasitic worms
• D) bacteria
• E) viruses

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Definitions:

Endangered

A status indicating that a species is at risk of extinction across all or a significant portion of its range due to various threats such as habitat loss, pollution, or predation.

Endangered Species

Species at risk of extinction due to a rapid decrease in population or loss of habitat, often caused by human activities.

Threatened Species

Plants, animals, or microbes at risk of becoming endangered within the foreseeable future throughout all or a significant portion of their habitat.

Imported Species

Species that are introduced into new environments by human activities, intentionally or accidentally.