When the cusps of the mitral valve stretch and bulge upward into the atria during ventricular contraction, the individual is said to have?

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid

Which environmental change would most likely result in bullfrog offspring that are able to store more water than bullfrogs in previous generations?

What atoms are found in nucleic acid and what atoms are found in proteins? compare the monomers that make up a nucleic acid versus what are the monomers that make up a protein?