The school district wanted to determine whether the more expensive floor wax (Brand A) was better than the cheaper (Brand X) floor wax at protecting its floor tiles against scratches. One liter of each of 10 test sections of the cafeteria floor. The test sections were all the same size. Ten (10) other test sections received no wax. After 4 weeks, the number of scratches in each of the test sections was counted.

because the asteroid belt is between the mars and jupiter orbits, it is around 2.2 to 3.2 astronomical units (au) from the sun – which is approximately 329,115,316 to 478,713,186 km. the average distance between objects is a massive 600,000 miles.

explanation:

the answer to you question is   jet streams

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.