the answer your looking for is D
Biomass decays and produces gases such as nitrogen and very small amount of helium. in many places it is used to produce energy by comustion.it's mass becomes less and a layer of humus type organic substance is left on the soil....if i'm not incorrect :)
False - they are not equally effective
Answer:
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.
Hence, option A is correct
Darwin proposed an idea that all species change over time because those that are best adapted to their environments are able to survive and pass on their traits to their offspring. This became known as Darwin's theory of evolution. This historic insight was described based on his observations of the inhabitants of the Galapagos Islands.
