NO alkenes can not react with potassium dichromate
Au^2S^3+ 3H^2 = 2Au + 3H^2S
Answer : Option D) Hot and dry with low growing shrubs.
Explanation : According to the attached image of the Biome, this particular biome displays the hot and dry climatic region along with low growing shrubs. A biomes are the way to divide the largely occurring flora and fauna in a particular place on the Earth's surface. These divisions are made on the basis of climatic patterns, soil types, and the animals and plants that are found to inhabit in that area.
Your answer would be 2.Because the matter in the nebula that formed Earth was spinning
Hope this helps! :D