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

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.

b) the inside picture would look at a very high temperature in a very low ph