Which polymer is a biopolymer?

polystyrene

polyethylene

polylactic acid

polyvinylchloride

A scientist monitors the contents of five duck nests in parks, five duck nests in zoos, and five duck nests in the wild during the spring and summer for three years. He makes a multiple line graph to plot and compare data for the three locations.

What is electrostatic attraction?

What are the three types of mixtures?

Two different compounds are obtained by combining nitrogen with oxygen. the first compound results from combining 46.7 g of n with 53.3 g of o, and the second compound results from combining 17.9 g of n and 82.0 g of o.

Does a pool of water and a piece of ice have different chemical properties?

Which radioactive element is used to determine the absolute age of late pleistocene animal remains?

Compare the practical uses and limitations of nuclear fission and fusion. Include in your answer a detailed description of the two processes, comparing and contrasting them in terms of the types of atoms involved, the conditions needed to get the

Why can two igneous rocks have the same minerals but different names?

Where do the heaviest elements in our solar system come from?

Four students presented different analogies to describe the formation of an ionic bond. Student A: A tug of war between seven middle school students and a high school student Student B: A small dog and a big dog tugging at a bone with equal strength