Which term refers to a landslide?

a. pollution
b. cave formation
c. sedimentation
d. mass wasting

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures