Waves that must travel through
a medium are

a. mechanical.
b. electromagnetic.
c. frequency.

Are substances released into the environment that in excess amounts cause damage

Whats one way that rocks do not follow the typical rock cycle pathway?

In guinea pigs, black fur (b) is dominant over white fur (b). cross a heterozygous (hybrid) black guinea pig with a homozygous (purebred) white guinea pig. complete a punnett square, identify the genotype(s), phenotype(s), and probability (% and fraction) that the offspring will be black and white?