Practice check: Which option answers this correctly: which planet is known as the Red Planet?

✅ D. Vitamin D

a: Vitamin B12 | b: Vitamin K | c: Vitamin C | d: Vitamin D Read more

✅ A. Mercury

✅ B. An area of land draining to a common outlet

a: A sea current | b: An area of land draining to a common outlet | c: A water bottle | d: A weather satellite Read more

✅ C. Energy from sources replenished naturally on human timescales

a: Energy only from coal | b: Energy only from oil | c: Energy from sources replenished naturally on human timescales | d: Energy from burning peat only Read more

✅ B. Painite

✅ A. Solar energy

a: Solar energy | b: Coal | c: Petroleum | d: Natural gas Read more

✅ B. Mercury

✅ E. None of these