(a)(1) What is pollution? (ii) State fou pollutants of water. (b) Describe th
effects of each of the pollutatns name
on aquatic organisms.​

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.

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

18. how do the cells in meiosis differ from the cells in mitosis?