Answer:
1. Obtain two identical containers and dry sand.
2. Shape equal amounts of sand into a  "slope on the side of"  each container.
3. Spray water on the sand in one container. The sprayed water represents "rainfall"
.
4. In the other container,  "place ice cubes to melt on the sand. This represents snow or glaciers."
.
5. Observe and record the changes in the sand.
6. Analyze differences between the two containers.
Explanation:
Mine hasn't been graded yet but I'm pretty sure this is the right answer. I'll come back once it's graded and say.
 
        
             
        
        
        
Answer: It’s definitely not D. I’m thinking A or C
Explanation:
Because survival of the fittest mean that the ones that aren’t the best will die basically. So that why it’s not D 
 
        
                    
             
        
        
        
Answer:
The human body is able to synthesize them:  proteins, fats
Contains nitrogen in the amine group
: proteins
Made according to instructions from DNA: proteins
Explanation:
The cells of the human body synthesize proteins from the transcription and translation processes.
Fats and carbohidrates are ingested in the diet and metabolized by the body. However some types of fat such as cholesterol is synthesized by the human body. Same as phospholipids that are part of the membranes.
Proteins are formed by hydrogen, oxygen, nitrogen and carbon. Amino acids are characterized  for owning a carboxyl group (-
COOH) and an amino group (-NH2)
 
        
             
        
        
        
Answer:
the evolutionary history of a species or groups of species
form by utilizing systematics
Explanation: