A. objects made of crystals minerals water and air
Process of elimination-
there isn’t organic matter in rocks so D is out
they are made of minerals so B is out
some types of rock (pumice) have air bubbles in them so A is more likely than C
Astronomers have seen stars forming within a nebular cloud. As the nebular cloud condenses and its own gravitational attraction collapses it, heat and energy build up creating a planet.
Answer:
by convection because convection is the transfer of heat due to indensity
Answer:
One should use less energy and embrace alternative energy sources such as wind or solar energy. Will try to give what is taken away from the earth by giving back to it. Such as afforestation should be done
Explanation:
The answer u r looking for is- True. Hope I’ve helped ;)