Which macromolecule has a basic unit that is composed of phosphate, a sugar ring, and one of five different bases?

What is the most important inorganic material for livings things? ! due tomorrow!

Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.