Which effects are factors in long-term climate change? Check all that apply. -Earth's orbit around the Sun

-ice forming on a lake

-solar energy

-volcanic eruptions

-thunderstorms

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

not sure if this what   you'r looking for would be percent composition

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs