Question

question 21
what is the great red spot?
a region on jupiter where the temperature is high & the gas glows with red visible light
a place where reddish particles from io impact jupiters surface
the place where jupiters rings set up an orbital resonance with its moons
an enormous high pressure storm on jupiter which is at least 350 years old

Explanation:

The Great Red Spot is a long - lasting high - pressure storm on Jupiter. It's not due to high - temperature glowing gas, impacts from Io's particles, or orbital resonance with moons.

Answer:

an enormous high pressure storm on Jupiter which is at least 350 years old