< < > > turn in 1 2 3 4 5 6 7 8 9 10send a message exit a gated channel in a cell membrane allows a. osmosis. b. simple diffusion. c. active transport. d. facilitated diffusion.

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

You are observing different types of cells in your science lab. one cell has many chloroplasts. what is the most likely function of this cell? a. energy production b. photosynthesis c. reproduction d. digestion

What are the pros and cons of quadrat sampling?