When the sea otters population declined, the kelp beds where eaten rapidly by sea urchins, removing most of the kelp. This is because: * 1 point
the carrying capacity for sea urchins had not yet been reached
the carrying capacity for sea urchins had been reached
the sea urchins were a keystone species
kelp was not important in this ecosystem

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

the answer is c.mitochondria. glad to .

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

i think the answer is c hope this