Which is an example of an organism?

a. a hickory tree

b. the stripes on a tiger

c. a beehive

d. a snake's heart

which example shows an organism maintaining homeostasis?

a. a bacterium dividing into two

b. a chicken laying eggs

c. a person sweating on a hot day

d. a lizard changing color to avoid a predator

what do all four of these molecules have in common?

a. they dissolve in water.

b. they are found in living things.

c. they store energy.

d. they store and transfer information.

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

Individuals do not compete directly for resources, but are prey for the same predator