Supernovae refer to the last stages in a star's life, when it explodes and disappears completely. After this explosion, there are several things that can happen - a black hole may appear or there may be star dust hovering in the universe. Well, this dust, and other materials that came from the massive star that exploded are used to create new planets. Every planet we know of emerged from the dust and particles in the universe - so this means that the same dust coming from supernovae can form new planets as well.
Ways in which people positively affect ecosystems around the world include: Recycling. Establishing wildlife preserves and parks. Creating green, open space laws.
Ribosomes consist of RNA's and special proteins that help to synthesize other proteins. Ribosomes can be found either floating within the cytoplasm or attached to the endoplasmic reticulum. They
Structures built on land underlain by weak mud that could liquefy are prone to collapse in an earthquake. Also structures built on top of, on, or at the base of steep escarpments could fail and produce landslides.
