Biology, 09.12.2019 18:31 elkinsmarie88oyzd23
Earth scientists have concluded that the methods of harnessing energy that have been used over the past two centuries, such as the burning of fossil fuels, are causing climates around the world to change more quickly and suddenly than ever before in human history. evidence includes increased temperatures in the air, rising sea levels, and the shrinking of ice glaciers at the north and south poles. the most complex level of organizational hierarchy that climate change could potentially affect is earth’s
biosphere.
communities.
organisms.
populations.
Answers: 2
Biology, 22.06.2019 00:50
Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems
Answers: 3
Biology, 22.06.2019 13:20
Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
Answers: 1
Earth scientists have concluded that the methods of harnessing energy that have been used over the p...
Health, 03.12.2019 18:31