During which period did the first large herbivores and carnivores appear?
a. devonian
b. mississippian
c. pennsylvanian
d. permian

the answer is the Permian period Hopefully this helps!

In order to determine the volume at a given temperature, you may apply Charle's law, which states that for a fixed mass of gas held at constant pressure, the temperature and volume of the gas are directly proportional. Mathematically, this is:

V / T = constant

Therefore, if the initial volume and temperature are known, we may determine the final volume at 900 K.