What do we call the three categories that divide living organisms based on their genetic links?

Air pollution is only caused by human activity, select the best answer from the choices provided ot of true or false

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

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.