How does friction affect the energy in a closed system of moving parts?

What is a possible result of higher air temperature caused by global warming

Which branches of natural science include the study of an organism that lived 10 million years ago

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?