Answer: They are MUCH farther away (thankfully)
I only know what question 5 is which is D. Sorry:(
Answer:
Individuals are often characterized as “tasters” or “non-tasters” of PTC, but there is some variability amongst tasters in how much bitterness they can detect. ... The ability to taste PTC is due changes in the TAS2R38 gene that affects the function of bitter taste receptors on the tongue.
Explanation:
In a well-designed experiment, there will only be one factor tested at
any one time. If there are more factors than this being tested, the
results can become quite convoluted, less focused and more difficult to
understand. Although it might seem that the more you test the more you
know, this is not the best way to obtain accurate results.
The most direct way for the water to get from the soil to the ocean is by way of a recharge zone with a low percolation rate. Human activity in the recharge zone can limit the amount water that reaches the aquifer.