Biological Evolution- is the refers to the cumulative changes that occurs ina population over a time.
I think it is Authority hope this helps
This works because the white pain acts as a barrier, therefor the sunlight a bounces off the glass instead of just going through.
Answer:
B. Hardness
Explanation:
Physical properties of a substance is defined as the properties which can be observed or measured without changing the composition of matter.
Physical properties include odor, appearance, color, texture, boiling point, melting point and many others.
Hardness is a physical property of a substance as it describes the resistance of substance to deformation and can be observed by simple touch or without changing the composition of matter.
While reactivity, toxicity and flammability are chemical properties of substances that change one type of matter into another type.
Hence, the correct option is B.
