Question

what were the main development that look place in the life of early man in prehistoric period?​

Answer 1

what were the main development that look place in the life of early man in prehistoric period?

Earth’s beginnings can be traced back 4.5 billion years, but human evolution only counts for a tiny speck of its history. The Prehistoric Period—or when there was human life before records documented human activity—roughly dates from 2.5 million years ago to 1,200 B.C. It is generally categorized in three archaeological periods: the Stone Age, Bronze Age and Iron Age.

From the invention of tools made for hunting to advances in food production and agriculture to early examples of art and religion, this enormous time span—ending roughly 3,200 years ago (dates vary upon region)—was a period of great transformation. Here’s a closer look.

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Answer 2

Answer:

iv) He had found the pen. It was lost ( complex with adjective clause)Solid angles can also be measured in square degrees (1 sr = (180π)2 square degrees), in square minutes and square seconds, or in fractions of the sphere (1 sr = 14π fractional area), also known as spat (1 sp = 4π sr).There are 24 hours in a day and scientist tells us that we should sleep for 3/4

of the day. How much time should we spend sleeping?the solid angle is mesured in _____the perimeter of a rectangle is 20 cm if the length of the rectangle is 4 cm then its breadth will beIf a+b+c=180 then prove that cot^2 A/2+cos^2 B/2+cos^2C/2=2+2sinA/2sinB/2sinC/2