Answer:
Aryans moved from the area of todays Afghanistan to the Indian subcontinent during the period of Indo-Aryan migration, somewhere around 1800 and 1500 BC.
Explanation:
Some scholars don't agree with this theory that the Aryans migrated to the Indian subcontinent, but most of historians are arguing that during this migration they came from the North and destroyed the Dravidians who were living there. Their period that started during the migration is known as Vedic period.
There ethnic was wavered after most of them were wiped out
It is difficult to make generalizations about the highland climate zone because little research has been done at high altitudes, and data is not readily available. Without actual data, it would be wrong to make any generalization about the highland climate zone.
Hope this helps
The following is a list of those most commonly in use minerals:
Antimony. Antimony is a metal that is used along with alloys to create batteries for storing grid power. ...
Asbestos. Asbestos has an unsavory reputation for causing cancer in people who work around it. ...
Barium. ...
Columbite-tantalite. ...
Copper. ...
Feldspar. ...
Gypsum. ...
Halite.
Answer:
23. b
25. b
27. b
28. b
29. a
Explanation:
23. The earth have seasons because our Earth orbits around the sun with the Earth's axis of rotation being tilted at an angle of
to the plane of the orbit.
24. Ozone in the protect us against the harmful ultraviolet rays coming from the sun.
The ozone layer is found to be located at the Stratosphere's lower part where the variation in its thickness depends on the seasons and the geography.
25. This phenomena is termed as equinox where at this time period, the Sun is Directly over the equator.
26. The part of the earth that provides us the protection against emissions from the sun is 'atmosphere' and it also creates the Aurora Borealis which is formed as a result of the interaction of the charged particles resulting from a storm of proton with the atmosphere giving rise to the aurora.
27. In a closed system, any waste items delivered by one animal types must be utilized by at different species.
28. Positive feedback promotes change as in this the underlying impact is improved or enhanced.
29. Sinks are those locations in a system where resources are collected..