15.Which of the following is NOT true about lunar eclipse? a. It occurs twice a year.
b. It lasts for an hour.
c. It can be witnessed in a few places
d. It occurs during night time​

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