Hello,
Average speed is total distance divided by total time. From the problem, our total distance is given as 500 kilometers and given time is 5 hours. Therefore, the average speed is:

Therefore, the average speed is 100 km/h. Please let me know if you have any questions!
This is a tricky one but on my part I'd have to say depending on the contract A,B,C.
Temperature and pressure can change the solubility of a solute.
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adapt to a changing environment
</span><span>organisms that possess heritable traits that enable them to better adapt to their environment </span>