They can occur anywhere between the Earth's surface; about 700 kilometers<span> below the surface.</span>
Answer: Gravity made the dust and gas in the nebula collide, flattening these materials into a disk.
Explanation: The nebula theory is a scientific explanation of how the planets and our solar system were formed. It suggests that our solar system was formed more than 4 billion years ago due to the effect of gravity on a cloud of gas and dust which were flattened into a disk. The gravity was so great that the matter in the nebula were made to collide against each other until they were compacted to form our sun.
The correct matches are as follows:
11. Strong currents, stout fire corals, surgeon and parrot fish
C. Submarine Terrace
12. Horizontal corals, gorgonian corals and sea fans
E. Reef Slope
13.Highest point of Reef, stoutly branching coral
B. Algal Ridge/Reef Crest
14. Beds of sea grasses, sharks and rays
A. Reef flat
15. Flat outter reef, encrusting coralline algae, gardens of coral
<span>D. Terrace</span>
Most part of the rest of North America is cold in the winter and warm in the summer, with moderate precipitation. Some areas have mild winters and long, hot summers and others have harsh winters and short summers
