Many factories release carbon dioxide directly into to atmosphere. The carbon dioxide would be considered an) A) primary pollutant
B) placer deposit
C) invasive species
D) secondary pollutant
E) scrubber

What maintain homeostasis when a persons internal body temperature is 97.5°f

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.

Match each symbol with its description.