<span>The gene sequence containing an operator, promoter and repressor is known as an operon. These genes are called as structural genes. the operon is regulated by the presence/absence of the inducer such as glucose/lactose. It may also be a constitutive operon, which works all the time.</span>
Answer:
B. Near the airport
Explanation:
Because both A and B are places where many people are found so placing a landfill for toxic waste near them will harm the people there. While putting the landfill near the airport places it at a great distance from from any populated areas.
Answer:
organism
Explanation:
the reason is that all the levels organisation make up an ORGANISM