Ireally need this done right ! 20 points protein provides 4 calories per gram. mary is on a diet that requires her to eat at least 40 grams of protein each day. she’s eaten 152 calories of protein today. how much more protein does mary need to eat to meet her goal? a. 1 gram b. 2 grams c. 4 grams d. 8 grams

Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere

Look at the picture below . what does this picture represent ?

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.