Answer:
<u>Competition</u> describes an interaction in which two organisms that interact must use the same limited resources because they are competing for them.
Explanation:
The word below Is the answer
Antibiotics are ineffective against viruses because viruses do not have cells. Viruses are infectious agents that live within the cells of other living things. Antibiotics work by breaking down the cell walls of bacteria or interfering with the bacteria's ability to repair its cell's DNA, according to How Stuff Works.
Average mass of the atoms of an element measured in atomic mass unit