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

The producers remains same for all the food web no matter we examine any biome. The producers refers to the green plants that make food for the consumers.

The producers make food by the help of photosynthesis using sunlight, carbon dioxide, chlorophyll and some other important gases.

The plants serve as the energy for all the other organism and they are constant in all the food web.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

age range would be the answer