Chloroplast , cell walls and centriols can be found in plant cell but not in animal cells.
ANSWER:
In the animal kingdom mammals have largest natural breasts.
EXPLANATION:
Mammals have largest breasts in animals and specifically Blue Whale has the largest breasts but they are inside the body.Among other animals goats, cows and buffaloes have larger breasts too but surely not greater than the size of Blue Whale's.Breasts are organs in which mammary glands are present, these glands produce milk.
They drill holes and bring up samples of rock and study how seismic wave move through the earth.
