Convection currents form in atmosphere and freshwater lake. Convection currents occur when there is difference in temperature in both substances (eg. fluids). When there is a difference in temperature, the hot substance rises and the colder one sinks. The flow then will be form a hotter to the colder region.
I'm what is this I'm not following are you asking if this is true?
The answer is A. There is evidence from geologic rocks that there was an ice age 2.4 billion years ago and the glaciers had reached Western Australia and India. This ice age is associated with the cooling of the earth due to the Great Oxygenation event when the earth was filled with oxygen produced by photosynthetic organisms hence reducing the amount of greenhouse gases in the then atmosphere. There have been four other major ice ages after that.
Japan doesn't have a semi-arid climate making the answer false
Answer:
I am pretty sure it is A. :)
Explanation:
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