Answer:
Mitochondria are thought to have evolved from free-living bacteria that developed into a symbiotic relationship with a prokaryotic cell, providing it energy in return for a safe place to live.
Explanation:
There could be a lot of reasons. To help break down food for the plants, kill off bad and harmful things that might damage the plant.
<span>All things that are found within the Earth are one way or another, composed of carbon. Carbon is very abundant within metals that are dug from the Earth and they can also be seen making up parts of the human body’s bones to make it light weight. Most scientists believe that throughout the evolution of Earth, carbon has always been present and makes up most of the materials that have existed before. </span>
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.
