Susan suffered from a heart attack. when the doctors tested the heart muscle they found that she had an increased ratio of lactic acid to pyruvic acid in her heart. what does this say about the availability of oxygen in her heart muscle cells? the heart cells must have received too much oxygen. the heart cells had not received adequate oxygen supply. the heart cells had a build up of carbon dioxide, poisoning her cells. the heart cells had too much carbon dioxide build up.

The heart cells had not received adequate oxygen supply.

Explanation:

Lactic acid is the result of a fermentation process that is happening in Susan's heart muscle. Fermentation is a process that occurs only in anaerobic environments, that is, environments with absence of oxygen. For this reason, we can conclude that the increased ratio of lactic acid to pyruvic acid in the heart of susan occurred due to the inadequate supply of oxygen to the heart cells.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).