Sand sheets and dunes cover approximately 25 percent of the Sahara's surface.
Answer:
I am pretty sure it is erosion.
Explanation:
Within our galaxy alone there are around 500 solar systems (or so many we have discovered so far): so the statement is clearly wrong and the correct answer is b) False.
There are a lot more starts in the galaxy, but not all of them have planets around them - so not all of them have a solar system
Brazil is one of the only countries that is close to a closed a economy because it barely imports anything into its country.
