Active immunity lasts longer
Answer:
Trace fossils may consist of impressions made on or in the substrate by an organism. For example, burrows, borings (bioerosion), urolites (erosion caused by evacuation of liquid wastes), footprints and feeding marks and root cavities may all be trace fossils.
Explanation:
It's e because it's a long Chain of carbon and hydrogen. It helps the rate of the metabolism allowing to digest quicker in your small intestent.
The second answer is b. third answer is c