Which of these human behaviors has the greatest potential to harm the environment?
a. use of technology to speed harvesting of resources
b. focus on steady harvesting of abundant resources
c. efforts to harvest easily replaced resources
d. use of technology to obtain difficult-to-harvest resources (incorrect)

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Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms

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.