What happens when weathering and erosion work together? A. New mountains are created
B. The climate changes overnight
C. Metal objects become rusty
D. They change the earths surface

Pl help

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.