Organism a shares 50% of its dna sequences with organism b, while organisms b and c share 90% of their dna sequences. what can be concluded from this?
a. organism a has suffered more mutations than organisms b or c.
b. organism a is more ancient than either organism b or organism c.
c. organisms b and c are more closely related to each other than they are to organism a.
d. organisms b and c are probably full siblings while organism a is a grandparent of both.

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.