A key or legend is used to understand symbols, colors, and shapes on a map
The average distance from Mars to the sun is 228 million km. What is this distance in kilometers? In scientific notation, it's 2.49209300 x 108 km. The wavelength of yellow light is approximately 0.00000058m.
If the region rises in population it will most likely cause a bigger scarcity in water, which may lead to a drought. A drought can ruin crops and leave land dry.
