Answer:
Department of Environment and Naturally Resources/Kagawaran ng Kapaligiran at Likas na Yaman.
Microwaves are a form of "electromagnetic" radiation; that is, they are waves of electrical and magnetic energy moving together through space. Electromagnetic radiation spans a broad spectrum from very long radio waves to very short gamma rays.
Answer:
Fecal contamination can arise from sources such as combined sewer overflows, leaking septic tanks, sewer malfunctions, contaminated storm drains, animal feedlots, and other sources. ... coli may be washed into creeks, rivers, streams, lakes, or ground water
Explanation:
A. a heuristic they apply the appropriate knowledge before even choosing the answer from what they know before
Answer:
D. The last option
Explanation:
You can't divide by 0, so find out when the given function is discontinuous.

You can see that x is discontinuous at x=-1,1, so find a piecewise function that fill in those gaps.
Plug x=-1,1 into your function to find out what values you need to fill in. But of course it's discontinuous at those points, so plug in a number near x=1 and x=-1. I chose x=-1.1 and x=1.1


so we need to fill in 2 at x=-1, and fill in 4 at x=1