Answer:
Vitamin A has several important functions. These include: helping your body's natural defence against illness and infection (the immune system) work properly. helping vision in dim light.
Explanation:
Answer:
Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. The winds blow from west to east in jet streams but the flow often shifts to the north and south. Jet streams follow the boundaries between hot and cold air. ... The earth's rotation is responsible for the jet stream as well.
Explanation:
Answer: they absorb photons from sunlight.
Explanation: