Which of the following is an example of an estuary? a. upstream part of a river b. lagoon c. lake d. pond

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

What is the ecological role of food chains and food webs

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.