The answer is B. The reason why is because natural selection causes changes in a populations over many generations, and in this case the change that is being made is the that the population is becoming immune to a disease.
Common seal eats lobster. Lobster eats limpet. Limpet eats algae.
Is that a test your taking?
Answer:
When an organisms reproduces asexually its offspring is identical, this means it has the same DNA code.
For example viruses look for specific protein types at cell membranes to "anchor" or "stick" and then inject their genetic material. If all the individuals of a population have the same membrane proteins the whole population is vulnerable to be infected by the virus.
Sexual reproduction creates genetic variability due to mechanisms like crossing over and the assortment of chromosomes during meiosis. On top of it, different parents contain different information which leads to offspring with similar but different characteristics which can end up having different membrane proteins that can save them from the virus.
Answer: Carbonic acid
Explanation:
The process of respiration of the terrestrial organism and marine organism leads to the exchange of gases. Due to exchange of gases, there is an entrance of carbon dioxide into the ocean and oxygen out of the ocean.
The addition of carbon dioxide into the water causes acidification of water and oxygen is diffused out of the water.
Hence, the product formed at Point A is carbonic acid.
