In driving a vehicle, the crash risk potential is approximately 4 times greater after dark than during the daylight hours according to the US Department of Transportation, Federal Highway Administration. This is due to the reduced visibility of the streets at night as well as direct bright light shining to drivers' eyes by the vehicles going the opposite way. This is also increased when there is heavy rain which further reduces the visibility.
<span>The most common contaminant to be found in drinking water is microorganisms, nitrate and arsenic. Though water quality and monitoring has come a long way over the past few years, viruses, bacteria and protozoa like giardia lambia can be found in the water and often leads to wide spread illnesses.</span>
Density is mass divided by volume. The mass of the block is 10 grams. The volume of the block is 2 mL: the water changes from the 3 mL line to the 5 mL when the block is added, so the block must be 5-3= 2 mL.
So, the density is 10 g / 2 mL = 5 g/mL.
Hope this helps!
Which is a characteristic of soil with a high percentage of clay?
Able To Hold Water
