Which of the following statements explain what is currently known about earth’s oceans? select all that apply.

the ocean is rich in natural resources.
less is known of earth’s oceans than outer space.
95% of the life in the ocean can be used as a food source.
marine organisms are a great source for new developments in pharmacology.

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

The fact that the total amount of energy in a system remains constant is a(n)

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.