How do sinkholes form? Be sure to provide a detailed explanation of sinkhole formation.

Which of the following is something every person can do plz asap apex

Compare the composition of the moon's surface with the composition of the earth's surface.

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.