<span>separate structures connected with canopies or pergolas, i think</span>
I believe that the answer is c. Humans can affect the physical environment by not upkeeping it. Also the physical environment can affect humans, for example, too much pollution can result in a sickness
By velocity, you are referring to the speed of sound. It can be modelled by the equation:
V = 331m/s + (0.6m/s/C) x T (where T stands for temperature and V stands for Velocity).
Plug in the numbers and you'll get 343m/s
Well first off you can learn about Global Warming and how to help stop it so you can make a difference in the world! You could also learn about what types of animals that you can save or that you want to help or maybe even what to do about all sorts of stuff that you want to learn about.
The answer is seafloor spreading