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:
north pole bro it's ready don't be sweaty
Differences in water density, resulting from the variability of water temperature (thermo) and salinity (haline), also cause ocean currents. This process is known as thermohaline circulation. In cold regions, such as the North Atlantic Ocean, ocean water loses heat to the atmosphere and becomes cold and dense.
Answer: The order of the stages of primary succession as seen at glacier bay are Pioneer, Dryas, Alder, and Spruce stages.
Explanation:
Primary succession is the process that plant species use to colonize a sterile habitat. The first living organisms, the pioneer species are hardy species, for example moss that are able to survive in any habitat. These change the unfavorable environment (lava, rock) to soil.
In Glacier bay, Alaska, the dryas came next, providing the soil with Nitrogen, then Alders which maintains the nitrogen content in the soil. This is followed by spruce trees which grow in the the shade of the alder
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