State three ways humans use Echinoderm endoskeletons.

What role do bacteria play in the carbon cycle

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?

Identify the examples in which sam interacts only with natural resources