Answer:
A. is correct
Explanation:
Low-pressure systems are associated with volatile weather conditions like clouds and rain. This is exactly what A says. Hope this helps :)
Answer:
a the body shivers to generate heat
Selective breeding on food crops may create stronger, and more healthy crops. The idea is to find your best crops, and breed them with other crops sharing the traits you want.
Answer:
Convection happens when particles with a lot of thermal energy in a liquid or gas move, and take the place of particles with less thermal energy. Thermal energy is transferred from hot places to cold places by convection. As the hot air above a radiator rises it pushes cooler air away from it.
