What can be done to improve soil fertility?

A adding fertilizers to the soil

B planting legumes

C leaving crops unplanted for a season

D all of these

Which of the following is the best example of an ecosystem? A. a nest of mockingbirds, some bullfrogs, a pond, and a sandy shore B. bees and wasps around a group of purple cornflowers C. a school of sunfish

I'm an aquatic habitat, an example of organisms from the pioneer community would be

Which process occurs only in autotrophic organisms A. Calvin cycle B. chemiosmosis C. Krebs cycle D. proton pump mechanism

What is the best explanation for why a cell might shrivel? A, There is less water in the cell than there is water in the environment surrounding the cell. B, There is more water in the cell than there is water in the environment surrounding the cell.

Bison and wildebeest are both large grazing animals with similar adaptations to life on relatively arid grasslands. Bison are found only in North America; wildebeest are found only in Africa.

What happens during photosynthesis? a. heterotrophs consume atp. b. autotrophs consume carbohydrates. c. autotrophs produce carbohydrates. d. heterotrophs produce atp?

How do decomposers obtain energy?

How is parenting a lifelong job? Explain.

Frontal precipitation is most characteristic of the middle latitudes. frontal precipitation is most characteristic of the middle latitudes. a. True b. False

The offspring of two koalas develops a genetic disease. When scientists studied the parents' DNA, they found that both parents carried harmful recessive genes passed down from the exact same lineage.