Which of the following is untrue of water?
a. it is a non-polar molecule.
b. it has strong surface tension.
c. it is the only natural substance to exist as a solid, liquid, and gas at normal temperatures on earth.
d. it has a solid form that is less dense than its liquid form.

Heat from the sun reaches earth to a. radiation b. convection c. conduction

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. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Alandscaper is shopping for landscaping materials. she wants to use materials through which water flows easily. which materials should she choose? check all that apply. clay gravel granite rocks with cracks loosely packed soil