In the following food web, crab would be considered a

In the absence of oxygen, _____________ can supply the energy needed to keep glycolysis going and continue to make ATP for the cell.

The physical location of an ecosystem in which a given species lives is called

Which one of the following sequences shows the correct hierarchy of classification, going from the most inclusive to the least inclusive?

According to the following food web, what percentage of biomass energy contained in the grass is retained by a hawk that caught and ate a snake that feasted on a frog that had eaten a grasshopper?

How does the concentration of carbon dioxide in the atmosphere affect Earth’s climate?

Which group does not possess a true nucleus?

Animals, forests, grasslands, and trees all belong to which sphere?

Oceans, rain, and glaciers belong to this sphere.

During photosynthesis, plants