There are hundreds of major and sub-fields of science. who decides which field of science is officially a sub-field of another field? select one: a. there is a board of scientists who decide. b. no one. over time scientists generally agree as to which field is a sub-field of another. but many fields are shared by two or more major fields. c. wikipedia will determine that.

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals

According ti the following map, what are the most common mineral resources found in the united states?

Look at the data above. provide an explanation for europe’s projected population decrease by the year 2050. (i'm doing this for future kids) the answer is : the percentage of people over the age of 65 and under the age of 15 in europe is currently the same at 16% each. therefore, the majority of the population is between the ages of 16 and 64. in forty years from now, in 2050, a greater percentage of the population will be over the age of 65. europe also has a relatively long life expectancy of 75 years. this, combined with a low birth rate means that by 2050 europe’s population will actually be less than it is today.