Why is it important to apply critical thinking to spam e-mail? a. spam e-mail can contain malicious computer code and viruses. b. spam can be an attempt to commit fraud. c. it can be an attempt to get personal and financial information. d. all of the above

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

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.

Which part of cellular respiration must occur before any of the other steps can occur