What country only has 3 a's in it

Which phrase describes the time it takes for a planet to make a complete rotation

Under which condition below would u expect a coarse-grained intrusive rock like diorite to form?

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water