A type of strong chemical bond in which two atoms share one or more pairs of valence electrons. Two or more atoms held together by covalent bonds. The attraction that exists between opposing (positive and negative) charges within the atom.
<span>Secondary succession is faster than primary succession because the soil is already there and the soil usually contains many seeds.</span>
This particular method of heat transfer is known as C. Radiation. Certain radiation is coming from the sun, to heat the atmosphere of the planet.
The doppler effect, when used with light, produces a shift of frequencies to red. Well, no matter which direction you look, there is a shift to red! That means that the universe is expanding or moving away from us in every direction. The idea, is that this could only happen if all matter was once in a single point, and there was an explosion. This explosion from a single point is called the big bang theory.
A nebula is a cloud of gases that can coagulate to become a new star.
