Answer:
The geocentric model says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it. The early heliocentric models consider the sun as the center, and the planets revolve around the sun.
Explanation:
It is a cold Artic air mass over Siberia. Air masses are altered because it doesn't stay in one place and changes as it moves due to the temperature of environment that can be caused by moisture. The cold Artic Mass from Siberia will go to the North Pole, Canada then moves further to the South area.
The loss of photosynthetic organisms will eventually cause a problem for animals because photosynthetic organisms are autotrophs, the foundation of any energy pyramid and/or food chain, and when this foundation is gone there is a major loss of energy for all organisms that are consumers since 100% of the energy comes from producers.