Nathan is enjoying his lunch with his classmates. his friend tells him that the food he is eating is converted into energy during the digestion process and that the body uses chemical energy to power our muscles. nathan knows this to be untrue. what kind of energy is released when humans use their muscles?

mechanical energy

Explanation:

When digesting the food, it does turn into chemical energy but that chemical energy turns into mechanical energy to use your mucles.

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.