What makes petroleum a nonrenewable resource?
a.) when burned, it adds pollutants to the air
b.) it takes millions of years to form
c.) it can be replenished within a person’s lifetime
d.) when burned, it contributes to global warming

What is the name for a substance formed in a chemical reaction

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides

Describe the two types of vascular tissue