Plzz help me figure out how to do this

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

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Modern whales developed their traits through natural selection what occurs during the process of natural selection