2. You need to get to class, 200 meters away,
and you can only walk in the hallways at about
1.5 m/s. How much time will it take to get to
your class?

The time taken is 133.33 seconds

Explanation:

Recall that time taken (T) = Distance travelled / speed

Hence, T = 200 metres / 1.5 m/s

= 133.33 minutes

Thus, the time taken to get to your class is 133.33 seconds

i have to report this, it doesn't relate to biology

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."