As i am taking a quiz
will mark as brainliest if your answer is correct!

question 18(multiple choice worth 3 points)
(01.05 mc)

four gases are described below:

gas a: 5 liters at 20 °c
gas b: 5 liters at 10 °c
gas c: 5 liters at 40 °c
gas d: 5 liters at 30 °c

which gas has the greatest average molecular kinetic energy?

gas a
gas b
gas c
gas d

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Convection currents are caused by differences in what two things?