No matter which biome we examine, there is always one group of organisms that is the nonmobile base for the biome's food web: the a) animals. b) bacteria. c) plants. d) soil.

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land

_is a product of the first stage of photosynthesis.atpglucosecarbon dioxidewater