Answer:
Explanation:
If you multiply (x - k)(x + k), you get 
which is equal to 
. Now you can see that 
must be equal to 
which is equal to 
. Now we just need to solve 
. The final answer is 
.
C. - A dynamic campus life
Hope I helped
You can just leave it blank... It's not really necessary :) <span />
Answer:
Carbon Dioxide, or CO2
Explanation:
Plants need to breathe, otherwise they won't survive
Humans' intake oxygen and exhale CO2
However, plants intake CO2 and exhale oxygen
Answer:
the answer is evaporation
Explanation: Evaporation is the process by which a liquid transforms into vapor (a gas). When some material is in its liquid phase, its particles are really close together (but not as much as we would see in a metal). As the temperature of the liquid increases, also does the kinetic energy of the particles. This cause the particles in the water to move a lot faster, thus its oscillations are larger. This causes an increase in the volume of the material.
