this question is for my science homework?
Why would pollutants from a new point source be less likely to show up in the Great Lakes?
It would all depend on where the point source is! The great lake drainage basin is fairly small when compared the the world as a whole.
Only if the point source is near the lakes, will you will see it in there.
Can they determine if the two sons are 100% blood brothers? This would tell us who the father was of the one child… We know who the father is of the other child. Neither possible father will participate in the testing.
You can test brothers, who will have similar markers on the paternal side.
You can also get a court order to have them tested, and made responsible for the tests. If they aren’t the father, you pay, if they are, they pay. If you’re poor, the state pays.
I have to make a story about pollution for 2nd graders and I need to explain what pollution is. My story is about people leaving trash lying around on the streets and the trash getting into the ocean. Is that even pollution? Please help!
Your story is on pollution since it tells on people leaving trashes on streets thus harming the area.
in short words, pollution means unclean or stink
I don’t really know what you need but that’s all the help I can give you.
How many batsmen who have played at least 10 Tests opened only once, I can only think of a few Aussies from the 70’s and 80’s but nobody more recently….
Rod Marsh
Greg Matthews
Peter Taylor
Kerry O’Keeffe
Hussey opened in his first 2 Tests and 3 times since then
There are a lot of players
Hedley Verity, Peter May (Eng)
Jack Ryder, Kerry O’Keeffe, Adam Gilchrist, Mark Waugh (Aus)
Andrew Jones, Brendon McCullum, Nathan Astle (NZl)
Hashim Amla (SAf)
Sarfraz Nawaz (Pak)
Alvin Kallicharan, Learie Constantine, Jimmy Adams (WI)
Sourav Ganguly, Sachin Tendulkar, Yuvraj Singh (Ind)
etc..
Okay everyone. I have this problem from my math class. Its on probability. Every week, other than our normal homework we are given a project to do. Obviously this one is on probability. The project questions are always a little harder to do. And I am stressing out on this one problem. So here it is, and if you can give any help that would be great. Thanks!
At the fall carnival there is an apple basket with 5 green apples, 4 red apples and 3 yellow apples. Each student team will draw (without looking) 2 apples from the basket.
a) The students draw the 2 apples WITHOUT REPLACEMENT. What is the probability that your team will get 2 apples of the same color?
b) The students draw the 2 apples WITH REPLACEMENT. What is the probability that your team will get 2 apples of the same color?
a)
The probability of getting a green apple is 5/(5 + 4 + 3) = 5/12. The probability of getting a second green apple is 4/(4 + 4 + 3) = 4/11. Thus the probability of getting two green apples is 5/12*4/11. For red, it is 4/12*3/11, and for yeloow 3/12*2/11. The total is (5*4 + 4*3 + 3*2)/(12*11) = 19/66.
b)
For green it is 5/12*5/12, thus the total probability = (5*5 + 4*4 + 3*3)/(12*12) = 25/72.
My husband thinks there’s a big difference and one is better than the other. Please enlighten us!
Periodically the state will require you to get your annual smog certification from a "test only" station, which has more sensitive equipment. Generally, unless required, I would not go to one as your chances of passing are generally lower (the regular stations are not as strict). I also think the "test only" stations are more expensive.
Also, before going to get tested, make sure to drive the car around for awhile.
ALSO, IN RESPONSE TO THE STATEMENT BELOW (THIS IS AN EXCERPT FROM THE STATE WEBSITE):
Two Percent Randomly Selected - As required by State law, two percent of the vehicles in the Enhanced Areas are also directed to Test-Only stations for their Smog Checks. These vehicles are selected randomly to evaluate the overall effectiveness of the Smog Check Program.
How Motorists are Notified - The Department of Motor Vehicles (DMV) notifies owners of vehicles that have been selected to have their Smog Checks performed at Test-Only stations. The registration Renewal Notice sent for these vehicles will say "Smog Certification Required at Test-Only Center".
is it only multiple choice? how many questions are there usually?..40? and is it hard?..also do you guys know any free websites i can practice?
i just took mine today, its all multiple choice there is 2 sections the first one is rules/ knowledge questions 20 questions and the other section is the driving signs which has 20 questions you have to get 15 on both of them to pass.
i passed the driving signs one which was extremely easy 18/20
but failed the rules/ knowledge questions i got 12/20 so i have to retake the rules/ knowledge questions.
am also wondering if there is a free practice website to study the rules/ knowledge section
I took a preg. test this morning the first morning after my missed period and it was negative. Just wondering how accurate is it after only one day passed missed period.
Most test say that they are 99% accurate the day of your missed period, however, some women may not have enough hCG to register a positive result that quickly. I would wait a day or two (since it takes 2-3 days for your hCG levels to double) and test again. Buy a test that is very sensitive, use the first morning urine and cross your fingers.
Good luck!
If you still get a negative, then you may want to wait a few more days or go and get a blood test. For some reason, some women get negative test well into their first trimester, so a blood test may be an option.
I am 2 days overdue and I repeated that test twice (two tests in one package) both came out exactly the same way. The minus sign was fully there and only the outlines of the plus line turned blue, and had no color in between. Is that an evaporation line? The result turned that way right away, well as soon as I it cleared enough to read it..The control line took 5 minutes with both tests to fully develop.
The HCG hormones are stronger (most condensed) in your first morning urine.
But, as the other gals have said…go to the doctor for a more accurate result. They can do a quick blood draw, and tell you with all certainty that you are pregnant or not.
If you want to try another HPT before hitting the doctor’s office, then try again using first morning urine… Wait a couple of days and repeat again.
If you are pregnant now, you will still be pregnant in a day or so…it might just be too early to appear clearly on a test.
What are the diff types of water pollutants?
Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, groundwater).
Water pollution affects plants and organisms living in these bodies of water; and, in almost all cases the effect is damaging either to individual species and populations, but also to the natural biological communities.
Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds.
Causes of water pollution
The specific contaminants leading to pollution in water include a wide spectrum of chemicals, pathogens, and physical or sensory changes such as elevated temperature and discoloration. While many of the chemicals and substances that are regulated may be naturally occurring (calcium, sodium, iron, manganese, etc.) the concentration is often the key in determining what is a natural component of water, and what is a contaminant.
Oxygen-depleting substances may be natural materials, such as plant matter (e.g. leaves and grass) as well as man-made chemicals. Other natural and anthropogenic substances may cause turbidity (cloudiness) which blocks light and disrupts plant growth, and clogs the gills of some fish species.
Many of the chemical substances are toxic. Pathogens can produce waterborne diseases in either human or animal hosts. Alteration of water’s physical chemistry includes acidity (change in pH), electrical conductivity, temperature, and eutrophication. Eutrophication is an increase in the concentration of chemical nutrients in an ecosystem to an extent that increases in the primary productivity of the ecosystem. Depending on the degree of eutrophication, subsequent negative environmental effects such as anoxia (oxygen depletion) and severe reductions in water quality may occur, affecting fish and other animal populations.
Pathogens
A manhole cover unable to contain a sanitary sewer overflow.Coliform bacteria are a commonly-used bacterial indicator of water pollution, although not an actual cause of disease. Other microorganisms sometimes found in surface waters which have caused human health problems include:
Burkholderia pseudomallei
Cryptosporidium parvum
Giardia lamblia
Salmonella
Novovirus and other viruses
Parasitic worms (helminths).
High levels of pathogens may result from inadequately treated sewage discharges. This can be caused by a sewage plant designed with less than secondary treatment (more typical in less-developed countries). In developed countries, older cities with aging infrastructure may have leaky sewage collection systems (pipes, pumps, valves), which can cause sanitary sewer overflows. Some cities also have combined sewers, which may discharge untreated sewage during rain storms.
Pathogen discharges may also be caused by poorly-managed livestock operations
Chemical and other contaminants
Muddy river polluted by sediment. Photo courtesy of United States Geological Survey.Contaminants may include organic and inorganic substances.
Organic water pollutants include:
Detergents
Disinfection by-products found in chemically disinfected drinking water, such as chloroform
Food processing waste, which can include oxygen-demanding substances, fats and grease
Insecticides and herbicides, a huge range of organohalides and other chemical compounds
Petroleum hydrocarbons, including fuels (gasoline, diesel fuel, jet fuels, and fuel oil) and lubricants (motor oil), and fuel combustion byproducts, from stormwater runoff
Tree and bush debris from logging operations
Volatile organic compounds (VOCs), such as industrial solvents, from improper storage. Chlorinated solvents, which are dense non-aqueous phase liquids (DNAPLs), may fall to the bottom of reservoirs, since they don’t mix well with water and are denser.
Various chemical compounds found in personal hygiene and cosmetic products
Inorganic water pollutants include:
Acidity caused by industrial discharges (especially sulfur dioxide from power plants)
Ammonia from food processing waste
Chemical waste as industrial by-products
Fertilizers containing nutrients–nitrates and phosphates–which are found in stormwater runoff from agriculture, as well as commercial and residential use
Heavy metals from motor vehicles (via urban stormwater runoff) and acid mine drainage
Silt (sediment) in runoff from construction sites, logging, slash and burn practices or land clearing sites
Macroscopic pollution—large visible items polluting the water—may be termed "floatables" in an urban stormwater context, or marine debris when found on the open seas, and can include such items as:
Trash (e.g. paper, plastic, or food waste) discarded by people on the ground, and that are washed by rainfall into storm drains and eventually discharged into surface waters
Nurdles, small ubiquitous waterborne plastic pellets
Shipwrecks, large derelict ships