Hello Gangt181, The current increase of carbon dioxide in the atmosphere is as a result
of human activities that began in the late 1700s. This period sparked
the beginning of the Industrial Revolution and this is when we began to
use fossil fuels. The burning of fossil fuels coupled with widespread
global deforestation has led to a rise in CO2. Excess carbon dioxide in
the oceans causes it to become more acidic. This acidity will affect
marine species with shells like mussels and lobsters.
Answer:
Natural selection leads to evolution due to the way reproduction works. In the example of European moths during the industrial revolution, we can see this clearly. When the industrial revolution was going, there was more pollution, hence darkening the skies and leaving ash. Moths, which before were white with occasional black spots dominated the area until pollution effected their environment. Whiter moths were eaten by bird who could easily see them against the black trees and skies. These moths could no longer reproduce, they were dead. Moths with more black could survive longer to reproduce because they were harder to see. As time went along, the moths turned mostly black, showing an example of evolution.
The outer coverings that are tough but, flexible provided protection to the land plants.
Answer: Option A ,Band C.
Explanation:
Sympatric speciation is the evolution or isolation of new species from the original populations of species occupying in the same geographical area. Sympatric speciation commonly occur due to sexual selection of mates can cause reproductive barriers or isolation which keep gene pools separate. A plant with extra set of homologous chromosomes is an example of sympatric speciation.
