Question

Describe how Earth would be affected if it no longer got energy from the Sun.

Answer 1

Plants and vegetation would cease to grow, leading to mass famine throughout the world.

Answer 2

Fortunately, Earth retains heat fairly well, so humans wouldn't freeze instantly. Without the Sun's rays, all photosynthesis on Earth would stop. All plants would die and, eventually, all animals that rely on plants for food — including humans — would die, too.