Are these questions true or false? 1. Regardless of the direction in which a comet is traveling, its tail points away from the sun.
2. All asteroids have the same composition.
3. A fireball indicates that a meteorite is about to land somewhere on earth
4. The trail of a comet can extend millions of kilometers behind it
5. Ceres is the largest asteroid and also is considered a dwarf planet
6. Pluto is considered a Jovian planet
7. Some comets, called Long period comets, may have periods of several thousand or even several million years

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.