Aspecific example of how light year is used in space exploration. pick one object in space (the nearest star, the nearest galaxy, the edge of the universe, etc.) and tell how far this object is from earth and how long it would take light to travel there.

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

What is used to keep track of the gamates and possible offsprings combination