6. the following atoms are all variations of the element carbon: 12c, 13c, and 14c due to differing
numbers of neutrons. what are these variations called?
a. isotopes
b. polynomials
c. polymers
d. isomers

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.

In the water cycle , when does water undergo a chemical change