The answer is 2. <span>The fact that mechanized agriculture has replaced manual labor. Hope this helps :)</span>
Human impact on environment in several ways, some common effects include water quality, environmental pollution and greenhouse gas emissions, depletion of natural resources and contribution to climate change. Some of these are the direct result of human activities, whereas others are secondary effects that are part of a series of actions and reactions. Though, technology is making lives of humans easier and comfortable. It poses a great threat to the environment. The threat is due to pollution, radiation hazards, exploitation of natural resources etc. Greenhouse gases and aerosols affect climate by altering incoming solar radiation and out-going infrared (thermal) radiation that are part of Earth’s energy balance. Changing the atmospheric abundance or properties of these gases and particles can lead to a warming or cooling of the climate system.
Answer:
is expensive to produce (C)
The <span>Colombia River is closer.</span>
Many people still think that United States is still a leader of the free world.
<u>Explanation:</u>
Even after the end of the colonization in the world and with the end of the cold war between the United States of America and the USSR, some people still think that the United States is still the leader of the countries in the free world.
The way with which the United States rule is with the trade policies of the country towards the other countries or the strong financial position of the country.
