Question

true or false first question is in drought pone area water harvesting structures should be ----------
second question is flood or the result of low rainfall---------
third question is immediate to help can prove very helpful for affect people during a natural disaster-----_-------
fourth question is no one can prevent volcano eruption -----------
fifth question is drought resistant crops should be developed to fight drought

Answer 1

drought is a period of below-average precipitation in a given region, resulting in prolonged shortages in the water supply, whether atmospheric, surface water or ground water. A drought can last for months or years, or may be declared after as few as 15 days.[1]It can have a substantial impact on the ecosystem and agriculture of the affected region[2] and harm to the local economy.[3]Annual dry seasons in the tropics significantly increase the chances of a drought developing and subsequent bush fires. Periods of heat can significantly worsen drought conditions by hastening evaporation of water vapour.

Many plant species, such as those in the family Cactaceae (or cacti), have drought tolerance adaptations like reduced leaf area and waxy cuticles to enhance their ability to tolerate drought. Some others survive dry periods as buried seeds. Semi-permanent drought produces arid biomes such as deserts and grasslands.[4] Prolonged droughts have caused mass migrations and humanitarian crisis. Most arid ecosystems have inherently low productivity. The most prolonged drought ever in the world in recorded history occurred in the Atacama Desert in Chile (400 Years).[5]