Which of the following best describes one way electron microscopes and light microscopes differ in structure? a) light microscopes use vacuum tubes instead of electron beams to concentrate light on the stage b) electron microscopes use an infrared light source instead of a regular light to display images c) electron microscopes use a beam of electrons instead of light to magnify images d) light microscopes use lamps instead of electric cables as a power source

Which of the following is an oxidation-reduction reaction? (pictured below)

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

An area has a few days of low humidity, warm air temperature, and high air pressure. what kind of weather is this area experiencing? o fog o snow storms o sun