<span>In terms of matter and resources, the Earth is essentially a closed system, because matter and resources are fixed.
</span>In terms of energy, the Earth is an open system, because there is a balanced transfer of energy. (The energy<span> radiates into the </span>Earth's system<span>, from the Sun and</span><span> then it is radiated back into space from the </span>Earth. The<span> flows of energy are regulated by the </span>Earth's<span> atmosphere and ozone layer.)</span>
Answer:
(D) Increased susceptibility to plant disease- if corn is more susceptible to plant diseases, then it will be at a risk of extinction.
Explanation:
Genetic variation helps a population to develop despite varying environmental conditions as to decrease the risk of extinction. Genetic diversity is used to create improved crop varieties with traits such as yield, pest resistance and environment stress. Lack of genetic diversity in corn will make it susceptible to plant diseases and be at risk of extinction.
C. Theocracy. Iran bases its political structure on Sharia law which is of the Islamic faith.
Answer:
Mid latitude cyclone are low pressure regional cyclone system formed in 30 to 55 N or S. In this region continental polar and tropical air masses collide to form fronts. Fronts are the boundary between two air masses. This front pushes the warm air to the north and cold air to the south and generating a clockwise rotation. Cyclone starts to form from southwest and reaches mature stage to form a well developed cold front and warm front.This cyclone become weak, both cold and warm front merge as occluded front, this causes the snow and poor weather condition in northeast US, same time southwest is the formation zone, so mild temperature.
The correct answer is - El Nino.
El Nino represents an irregularly occurring and complex series of climatic changes that is affecting the Equatorial parts of the Pacific Ocean and beyond every few years, it is characterized by the appearance of unusually warm ,and nutrient poor water in the eastern part of the Pacific, close to Peru and Ecuador.
