Which of the following best describes the interaction between earth’s crust and living organisms?

a.
raw materials essential for life are cycled through earth’s crust.
b.
fossil fuels are a valuable energy source for the biosphere.
c.
the continental crust allowed the evolution of life on land.
d.
the crust recycles the organic materials in sedimentary rock.

How many atoms are there in 5.70 mol of mg

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

How does the digestive system interact with the circulatory system? a. messages sent as electrical impulses from the digestive system are transported throughout the body by the circulatory system. b. nutrients taken in and broken down by the digestive system are carried to various parts of the body by the circulatory system. c. nutrients and gases are absorbed by organs in the circulatory system. then, they are transported to all parts of the body by organs in the digestive system. d. oxygen and carbon dioxide are exchanged by organs in the digestive system, and the gases are carried to the rest of the body by the circulatory system.