Wes places red blood cells in a petri dish with pure water and observes them under a microscope. He drew a model to illustrate his observations.

Pest analysis, a framework for understanding different facets of the world in which a business operates, looks particularly at political, social, and technological factors.

Ben is interested in using a source that provides original research, current and developing trends and experts within specific fields. which source should he use?

Why do you need to classify the size of a particle