Henry and Tiffany are performing chemical reactions in their high school chemistry class. Henry performs his reactions with the use of a catalyst. Tiffany performs the same reaction with no catalyst present. Could Tiffany change other aspects of her reaction besides adding a catalyst to influence its rate, yes or no?
Ans: yes

Two students from the same class, studies different types of animals. Bill studied predators, while John studied grazers. Which student didn't find out that predators can be keystone species?
Ans: John

The country of Qatar is opulent, to say the least. They have one of the highest per capita income in the world - exceeding that of Western Europe and North America. Over-consumption is the way of life in Qatar. While similarly small country of Bhutan puts emphasis on the happiness of its citizens in a different way. Bhutan does not give way to material over-consumption like Qatar does - it cares about its citizens' spiritual and social well-being. Will Bhutan's environment most likely degrade or sustain?
Ans: sustain

Different societies take care of their young differently. It often boils down to economic activities. For example, take two locations, location A and location B. Location A is a large city where life is hectic. Children are usually raised here according to classical attachment. On the other hand, location B is in the countryside where people get to see each other more often. Location B is essentially an alloparenting community. In which location a child would most probably have a single caregiver, location A or location B?
Ans: location A