Answer:
The answer is not in any of the options and is the following:
to eliminate any remaining Hfr cells.
Explanation:
In a medium that has a streptomycin antibiotic it is used to kill Hfr donor cells after the conjugation is interrupted. This is entirely due to the streptomycin sensitivity allele (str-s) which are found in Hfr strains. The presence of the streptomycin resistance allele, located in the receptor, is used for the specific destruction of Hfr donor cells after conjugation occurs.
Answer:

A society is choosing to replace its nuclear power plants with more sustainable geothermal power plants. Which of the following is an advantage to switching to geothermal power?
A. It can contaminate groundwater.
B. It uses a renewable resource.
C. It consumes a radioactive material.
D. It produces more hazardous waste.
Explanation:

There<span> are many plant-</span>like protists<span>, such as algae, that get </span>their<span> energy from sunlight through photosynthesis. Some of the </span>fungus-like protists, such as the slime molds decompose decaying matter. The animal-like protists<span> must "eat" or ingest </span>food<span>.</span>
Predators have to eat. If things are good in an eco-system then the prey is eating good which means the predators can eat good also. Starvation means that things in the eco-system are going bad. Also, It helps the earth maintain its balance. If too much of any aspect of the system is removed it throws the whole thing off balance. too many herbivores will eat too much vegetation.
Some examples of important nonliving things in an ecosystem are sunlight, temperature, water, air, wind, rocks, and soil. Living things grow, change, produce waste, reproduce, and die.