Answer: The presence of seeds that need light to germinate in the farm.
Explanation:
There are some specie of seeds that germinate best when they are exposed to light.
If these seeds are covered in soil, it is very likely they they will remain dormant and not sprout until conditions improve.
These seeds only needs to be pressed onto the surface of the soil where they can easily access sunlight and kept moist to germinate.
Once the light from the Sun hits this seed they obtain the required energy needed for them to germinate.
Therefore when the farmer ploughed the field he was unknown to him, exposing the seeds to the much needed light.
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This statement is true because the fog absorbs the dirty coal particles and it turns into a dirty brownish "smoke-fog" hence the name smog.
Answer:
"This civilization is known by many names: Ancient India, Indus Valley, and Harappan Civilization. Historians and archeologists believe the Indus Valley Civilization began around 3000 BCE. There is evidence of trade between Ancient India and Mesopotamia as early as 3200 BCE."
Explanation:
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