During the industrial revolution in England, a population of light-colored moths population fell while a population of dark-colo
red moths population rose. Both types of moths were usually found on the trunks of trees in cities. Apparently, birds were eating the light-colored moths at a faster rate than they could reproduce. But they were leaving many of the dark-colored moths alone. What is the BEST explanation for this data?
a
The trees had become coated with soot and the dark moths were better camouflaged.
b
Dark-colored moths flew faster than light-colored moths.
Option A, The trees had become coated with soot and the dark moths were better camouflaged.
Explanation:
During the industrial revolution, bark of the trees became dark in color due to which the light colored moth were easily identifiable.
In response to this environmental change, the moth also evolved and became dark in color.
However, the total moth population of moth then constituted of both light and dark colored moths but the birds could eat only the light colored moth because they could not camouflaged themselves against the color of trees’ bark.
Genetically modified can be stated as the foods which are derived from whose genetic material (DNA) has been modified in a way that does not occur naturally
<u>Explanation:</u>
<u>pros:</u>
It takes less land for cultivation and it produces more food
It can conserve energy soil and water resources
It can save plants from extinction
It will use less water
less use of pesticides
<u>cons:</u>
Increased rate of allergic reaction
It can spoil or pollute the others fields and stuffs