I answered them but im not sure if they are right

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the

Genes that come together with different alleles are heterozygous. homozygous. genotype. segregated.

If you relate the doppler effect on sound to the color of light waves, a police car would be the color as it approaches and the color as it recedes away from the observer.