Suppose you want to know if the water in a stream is safe to drink. Which ecological method or combination of methods would you use in your investigation? Explain your reasoning and describe the procedure you would use.

Which is the most dominant generation in a liverwort

What is a population? a. all the members of the same species living in the same ecosystem at the same time b. the number of a species living in the same ecosystem over a period of time c. the total number of organisms living in an ecosystem at a point in time d. all the members of a food web in the same ecosystem

Which describes a group of organisms that is considered a species