Question #2 Multiple Choice Which of the following has increased agricultural efficiency the most? the use of crop specialization the use of animals the use of crop rotation the use of machinery

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

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.

Are the earth's ocean floor and continents the same age geologically? why or why not?