Answer:
Overpopulation. Survival used to mean repopulating.
Pollution. Pollution is everywhere. From the trash thrown out on the freeway,...
Global Warming. Global warming is arguably the greatest cause of impact to the environment.
Climate Change. Climate change is closely connected to historical developement...
Explanation:
Answer:
More efficient use of agricultural land can boost crop yields and meet growing global demand for food. Smallholders have a vital role to play, both because they produce much of the world's food and because they represent a large share of the world's poor and food insecure.
Explanation:
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Answer:
Human activity - Produces greenhouse gasses.
Greenhouse gasses - Cause atmosphere to trap more heat.
Sun's output - Can vary.
Ice age - Peaked 20,000 years ago.
Explanation:
Human activity includes the usage of fossil fuels on a very large scale, and by using them we release huge amounts of greenhouse gasses into the atmosphere.
The greenhouse gasses have the ability to trap the heat that is reflected from the surface of the planet, thus keeping more of it in the atmosphere and causing global temperature rise.
The sun is technically a star, thus an object that produces energy and light, and like every star, it has variations in its activity in accordance with the processes going on on it.
There have been numerous ice ages through the geological past, and the last one of them ended only around 10,000 years ago, with its peak being just 20,000 years ago.
Answer:
The classification relating to the European population is described elsewhere here.
Explanation:
- Europe's population growth as a whole has been 143 persons every square mile, making it the 2nd the more thickly inhabited region.
- Throughout the country's increasing slowing demographic growth and an aging population, Europe has been influencing the globe, but this issue is one that concerns most emerging economies and to a certain extent.
Formed-
Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger.
Erupts-
When it's underneath the surface, the molten rock is called magma. When it reaches the surface, it erupts as lava, ash and volcanic rocks. With each eruption, rocks, lava and ash build up around the volcanic vent where the material blasts out of.