Problem: Jim and Greg are brothers who both run their own farms, but they rarely see each other due to them living in different states. Greg runs a farm in Texas where he rarely sees rain so he spends much of his day watering his crops. Jim lives in Illinois where it rains much more regularly so he has more time to spend dealing with his farm animals instead of watering his plants. Both men intentionally purchased their farms next to lakes since they have always loved fishing during their free time. The brothers are currently planning a fishing trip together, but they are just debating which lake to travel to. Whose lake will have less algae?

A: Greg

Problem: Tree city and Leaf city were the two biggest cities in Boulderland. Tree city burned lots of gas and other fossil fuels, while Leaf city was very protective towards its environment. Which city caused less harm to human beings?

A: Leaf

Problem: Two countries used different fuels as power sources for their activities. Alsacia used fossil fuels, while Lorena devised more advanced energy storage devices, therefore relying on electricity. Which country used fewer alternative energy sources?

A: Alsacia

Problem: Germany took steps to increase the use of renewable natural resources. Today, they are the leader in using renewable resources. Most of their energy requirements are met with renewable natural resources. But it's not the case with nearby Russia. Russia has been heavily depended on non-renewable natural resources. With the discovery of huge gas and oil reserves there is no sign that situation would change in Russia any time soon. Would Russia's natural resources last longer or shorter than Germany's?

A:
shorter