A lake such as the one pictured is considered an
open system because
A. it is isolated by the mountains
surrounding it.
B. there is an input and output of energy
and water.
C. there are no interactions with gther
bodies of water.

Me . based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

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.

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal