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 Germany's natural resources last longer or shorter than Russia's?

A: longer

Problem: Two geologists were researching agents of landscape change. Danny studied glaciated environments, while Manny researched those that have never been glaciated. They later compared and exchanged data. Which researcher studied more about the debris transported by the glacier?

A: Danny

Problem: Two students studied chemistry. Nate studied alkanes, and Ben studied noble gasses. They both got an A later on. Which student learned more about how many carbon atoms each molecule of the alkane has?

A: Nate

Problem: the students used yeasts in two different experiments: they baked bread using baker's yeast, and made beer, using brewer's yeast. They learned a lot about sugars and chemistry. Which yeast is found around the human body less often?

A:
baker's yeast