His is word used to describe a characteristic of a hypothesis. it means you are able to experiment to see how two variables may be related is called

Number and variety of living organisms includes genetic, species, and ecological types

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.