Answer:
Confined aquifers are aquifers that are overlain by a confining layer, often made up of clay. The confining layer might offer some protection from surface contamination.
Explanation:
answer one of my questions :p
2 because, the two sex cells sperm and egg cells
First blank: the sun
Second blank: not sure
Third blank: temperature
B because cactus' are usually in a dry environment, they close their stomata during the day to keep water vapor from leaving the plant. Instead they do their processes at night to avoid extreme water loss.