Which example best shows conservation of resources?

let the water run while brushing your teeth

walking instead of driving a car to get to the library

leaving the lights on when leaving a room

using a new disposable plastic bag to carry groceries

Which statement best describes the function of enzymes?

Which of the following is true about the speed of light? it depends on the wavelength.

Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.