What type of machine is a ramp for wheelchairs?

a. mechanical machine
b. compound machine
c. simple machine
d. complex machine

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.

My plate recommends that of your nutritional intake comes from fruits and vegetables. a. 30% b. 50% c. 20% d. 40%

Ill give u brainliest plz how are the processes of cellular respiration, photosynthesis and carbon cycle related to each other?