2 points 4. Homologous structures are body parts of organisms that are similar in
structure and position but have different function. Which set of organism
structures are homologous? *
a. wing of a bat; wing of a bee
b. flipper of a porpoise; foreleg of an elephant
c. flipper of a whale; leg of a centipede
O d. leg of a spider; leg of a frog

your a sped   no one cares

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

the backbone of the dna and rna compound is sugar phosphate.