Which example describes a mutualistic relationship between organisms?

a. young wasps prey on caterpillars.

b. crabs eat the remains of dead fish.

c. ants protect a tree on which they feed.

d. tapeworms feed on food in the intestines of cats

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.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment