72. In cellular respiration, cells break down glucose in the presence of to release energy, water and carbon dioxide.
a
oxygen
b
nitrogen
Chydrogen
SKID

i believe the correct answer is d

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.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?

cell division is not regulated in tumor cells.