Answer:
Random mutations led to evolution of pesticide resistance genes in bed bugs.
Explanation:
Random mutations in genome of bed bug imparted them the pesticide resistance. Since the bed bugs having the mutation of pesticide resistance were able to survive under presence of pesticides, this variation was favored by natural selection. The bugs with pesticide resistance transmitted this trait to their progeny. In time, the bed bug population consisted of most of the bugs having the pesticide resistance.
Answer:Physical systems differ from social systems because a physical system refers to systems that rely on a group of physical parts to perform a function. Examples of a physical systems are solar systems or even an animals digestive system. Social systems are systems like an ant colony, wolf pack, or a town.
Explanation:
The virus becoms infection, and they create an epidemic that will last for a long time. This was the case back in the early days.
Answer:
A baby is made
Explanation:
The sperm cell (from the man) and the egg cell (from the woman) combined, makes Zygote, the Zygote converts into the Embryo, and the Embryo converts into the Baby.
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Genetic variation occurs.
Mutations are not copied over and over again.
