Without stratospheric ozone, which of the following would most likely occur? i. smog over major cities would be greatly reduced. ii. farms would produce surplus crops because of increased photosynthesis. iii. uv radiation would damage phytoplankton and reduce populations of aquatic consumers. i only ii only iii only i and ii i and iii

III only

Explanation:

The ozone layer is extremely important for the living organisms on Earth. It is a layer that manages to stop big portion of the UV radiation from reaching the surface of the Earth, thus minimizing its negative effects, and only letting enough of it to be useful for the living organisms. If the ozone layer is removed though, then the UV radiation will be so high that most of the living organisms on land would die out because they can not stand such high levels of UV radiation. The marine organisms will also be badly effected, and the majority of them will also die out because of too much radiation, thus making enormous damage to the life on the planet.

i don't think it dose sorry

ek = (m·v2) / 2

v - velocity of system after the collision

m = m1 + m2

ek = (m1 + m2) ·v2/2

ek = (200 + 250) ·2,32/2 = 450·5,29/2 = 1190,25 j