Aplant absorbs 200 j/g of energy from the sun. a cow eats the plant and absorbs 120 j/g of energy. the cow is fed to a group of humans who absorb 70 j/g from the meat. what is the main reason the energy consumption decreases from one consumption to the next?

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.