What marks the southernmost border of Mesopotamia *Help*

The Tigris River formed the northern-most boundary of Mesopotamia. The Euphrates River formed the southern-most boundary. Both rivers flowed from the north to the south east, emptying into the Persian Gulf, which formed the eastern border of Mesopotamia.

Explanation:

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.