The forest habitat of elephants has also decreased in size due to humans moving in, so the numbers of the elephants have decreased. Having read the above passage, choose the right answer to the following question (choices are they decrease in number or they increase in number ): If a herd of elephants is living happily in a forest and a group of humans then decides to move in, what happens to the elephants they decrease in number or they increase in number?
they decrease in number

When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction. Having read the above passage, choose the right answer to the following question (choices are smaller or larger ): If you spend a lot of time working out your muscles will be smaller or larger?
larger

Q: When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow. Having read the above passage, choose the right answer to the following question (choices are more or less ): If someone has a smaller than average physical heart then it will beat more or less in order to pump blood?
A: more

Question: Different types of rocks weather at different rates. More resistant types of rocks will remain longer. Having read the above passage, choose the right answer to the following question (choices are Shorter or Longer ): John was looking at rocks in the valley and noticed something. The more resistant the rocks he looked at were, the amount they remained was Shorter or Longer?
Answer: Longer

*Question*
In refraction of light, the greater the change in speed, the more light bends. Having read the above passage, choose the right answer to the following question (choices are the slow motion or the quick motion ): Ron was playing with a flashlight. He moved it back and forth slowly, and then quickly. Which motion likely caused less light to bend the slow motion or the quick motion?
**Answer**
the slow motion

The more dense the medium, the slower the light moves. Having read the above passage, choose the right answer to the following question (choices are faster or slower ): A very dense medium will cause light to move faster or slower?
slower