Irrigation leads to? a-Decreases in groundwater
b-Increased evaporation
c-Increases in water flow downstream of the water source
d-Decreases in rainfall in the irrigated area

a

Explanation:

Irrigation salinity occurs due to increased rates of leakage and groundwater recharge causing the watertable to rise. Rising watertables can bring salts into the plant root zone which affects both plant growth and soil structure. The salt remains behind.

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.