Answer:
Light travels in a straight line until something alters its path. Here are three ways light's path can be altered: it can be refracted, reflected, or absorbed.
Materials such as a mirror or aluminum can reflect light.
Materials such as water or glass can refract light.
Materials such as coal or clack paint can absorb light.
Answer:
because they help your brain produce the lack of energy it could be getting
Explanation:
Fossils can be classified by their morphology (how they look), ethologically (how they acted), and toponomically (where they are in the substrate layers) to produce phylogenetic trees. However, more recent advances in genetic technology allow us to extract DNA from more recent fossils that have not had too much breakdown of the DNA, and we can much more accurately classify species from that information, and also provide much more accurate phylogenetic analysis.