Carbohydrates lipids proteins and nucleic acids are important molecules in living organisms. These large structures have similarities, however they have certain differences that may be used to distinguish them. Which of the following statement best describes the macromolecules ?

A) Oxygen and phosphate are found in carbon hydrates

B) Nitrogen atoms are found in proteins and lipids

C) Nitrogen and an R-group are present in proteins and nucleic acids

D) Hydrogen , carbon and oxygen atoms are present

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey