How can recycling impact the environment?
a) it uses less energy to make something from recycled materials than from new materials.
b) it increases the amount of landfill space needed.
c) it uses more natural resources than new materials do.
d) it increases the need for mining, creating jobs.

The “death throes” of stars are amongst the most complex phenomena in all of astronomy, and the “corpses” of stars amongst the most energetic and exotic objects in existence. beginning at the end of the core helium fusion stage in a star’s life, describe in detail the post-main sequence development of both (a) a 1.0 solar mass star, and (b) a 25.0 solar mass star. in what significant ways do they differ? what role does each of these types of stars play in the "star-gas-star" cycle and the evolution of chemical elements in our galaxy?

What is magnetic flux? explain faraday's law of induction.

Which property of fossils allow scientists to determine the relative rock ages..