Which of the following is an example of how living things, including humans, affect erosional and weathering processes?
a. animals burrow into soil and humans excavate souls when building.
b. decaying organic matter and burning off fossil fuels contributes to physical weathering.
c. plants contribute to erosion when. their roots exert pressure on rocks
d. all of the above.

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

What are examples of the plant life and animal life that can be found in each type of terrarium

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?