Which is the source of energy for earths living things?

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?

Which direction does the energy flow in this energy pyramid ?

The pronunciation aid that determines the stress placed upon a syllable is the