Which ancient river valley civilization was located along the tigris and euphrates rivers in the land of mesopotamia? a. sumer b. memphis c. mohenjo-daro d. harappa

The Sumerians were the first Mesopotamian civilization considered the first and oldest civilization in the world.

The Sumerians settled in the vicinity of the Tigris and Euphrates rivers, near the mouth of the Persian Gulf. They spoke their own language and had their own religion, which was central to their social ordering.

In addition, the Sumerians left the legacy of cuneiform writing, it was considered the first record of the writing of humankind.

Therefore, the right answer is A.

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.