Answer:
Many researchers have found the evolution of the eye attractive to study because the eye distinctively exemplifies an analogous organ found in many animal forms. Simple light detection is found in bacteria, single-celled organisms, plants and animals. Complex, image-forming eyes have evolved independently several times
<span>The Declaration of Independence expresses the human rights of citizens, including life and liberty. The correct answer to the given question can be found from option "A". The Declaration of Independence was signed on 4th of July in the year 1776 and it was a document that showed that the 13 United States colonies were from then on independent and not a part of the British ruled colonies. The people of these thirteen colonies wanted to be free from the oppressions of the British rule and wanted all rights that a citizen of a free country enjoys. John Adams was one of the key figures that wanted freedom from the Britishers. </span>
Only era can vary in length of time.Era means age,period which doesn't exactly define the time
Century=100 years
decade=10 years
millennium = 1000 years,
C people needed a place to sell and buy goods
Because they prepared food
