*Question*
Given the fact that:  Warm air is less dense than cool air, so it rises higher in the troposphere.  Answer the question:   Warm air is able to fill more space than cold air because it is more dense or less dense?
**Answer**
less dense

*Question*
Given the fact that:  The forest habitat of elephants has also decreased in size due to humans moving in, so the numbers of the elephants have decreased.  Answer the question:   Erin was going to see the elephants in the jungle. If the jungle is smaller than it was 20 years ago, then what has likely happened to the population of the elephants it has decreased or it has increased?
**Answer**
it has decreased

*Question*
Given the fact that:  Gluons make quarks attract each other more strongly the farther apart the quarks get.  Answer the question:   When there are low levels of gluons in quarks it becomes weaker or stronger?
**Answer**
weaker

*Question*
Given the fact that:  The more basic a solution is, the closer its pH value will be to 14.  Answer the question:   If Jim decreases how basic his solution is, it means the solution proximity to pH 14 is decreased or increased?
**Answer**
decreased