The theory of continental drift suggests that at one time,
a. the continents were all joined into one land mass
b. there was no land on the earth
c. there was no water on the earth
d. all continents were made of ice

your answer should be c) enjoy!

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements

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.