I believe that the answer to your question would be A. Heart Begins.
Answer:
Badwater Basin is an endorheic basin in Death Valley National Park, Death Valley, Inyo County, California, noted as the lowest point in North America, with a depth of 282 ft (86 m) below sea level.
Explanation:
Lipids are made up of carbon, hydrogen, and oxygen. So I'm assuming A would be the best answer. Proteins are made up of carbon, hydrogen, oxygen, and nitrogen and nucleic acids are made up of carbon, hydrogen, oxygen, nitrogen, and phosphorus.
Answer:
those are homologous structures, they share a common ancestor, they have similar bones but different functions
A substance with pH 6 would be an acid, because it's 1pH to the left of a neutral substance
