Which of the geochemical cycles uses bacteria at every phase? Water cycle
Nitrogen cycle
Carbon cycle
Phosphorus cycle

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

Eutrophication caused by human nutrient pollution.

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?