Which of the following describes an example of life coevolving with a change in Earth's systems? A. Large grassland birds developed on several different continents.
B. Many species of reptiles and amphibians evolved gradually over extremely long periods of time.
C. A sudden environmental change triggers a mass extinction of a group of mammal species.
D. Oceans flooded large land areas, creating shallow marine habitats in which animal groups split into different species.

answer; i believe the answer is (polygenic inheritance;

because the light is a great source of energy for the plants to survive. (i hope this )

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.