This diagram below shows the carbon cycle Which of the following descriptions of the carbon cycle is most accurate?

A) It is an open system because the amount of carbon in the system stays constant

B) It is a closed system because the amount of carbon in the system stays constant

C) It is a closed system because of the amount of carbon in the system stays constant

D) It is an open system because the amount of carbon in the system is variable

The population of bacteria in a petri dish doubles every 40 seconds. the population of the bacteria is initially 400 organisms. what unit is most appropriate for the time at which the number of bacteria is 300? hour bacteria per hour second bacteria per second

What is the relationship between absorbance of light and the rate of photosynthesis?

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.