Which statement describes a compound machine? a. it has movement in only one direction. b. it can only be acted on by one force. c. it is made up of more than one simple machine. d. it makes work more difficult.

Prior to the mt. st. helens eruption on may 18, 1980, satellite and topographic views of the volcano were captured. based on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m? question 9 options: 600 m 400 m 750 m 500 m

Which cell organelle is the site for photosynthesis? a. chloroplast b. endoplasmic reticulum c. golgi apparatus d. lysosome

Which test would show positive results for orange juice