Which labels best categorize the resources shown in the diagrams?
o
x: natural
y: human-made
x: limited
y: unlimited
x: can be replaced
y: cannot be replaced
x: used in power plants
y: not used in power plants

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

70 give a real life example showing how sensory neurons work with the motor neurons

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?