Answer:
A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. ... To identify a chemical property, we look for a chemical change.
The answer is b)
The niche is the job the animal does in it's habitat to contribute to the habitat.
two hydrogen bonds are formed between adenine and thymine
All the blood types are A+, A-, B+, B-, O+, O-, AB+, and AB-.