review the image of the bean seeds. which of the following best describes the type of movement that is occurring in the germinated bean seed?
(1 point)
photoperiodism
gravitropism
thigmotropism
phytochrome

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided

Diagram of the evolution of land plants?

The activity of the modern sample is 1.10 bq . how long does that measurement take?