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What are the advantages and disadvantages of natural selection?
- determines the fitness of an organism by direct application.
- employs a wide range of criteria
- provides for opportunism
- involves a lot of chance.
- some organisms escape the full range of possible criteria
- is under employed in boom times, over-employed in lean times.
- recessive traits 'hide' from the process.
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The advantages of natural fertilizers would be that they are not made of chemicals and not harmful for the body. A disadvantage is that they smell bad and don't work as we…ll.
(in the US) the advantages are that you possess all the privileges of citizenship the same as a natural-born citizen EXCEPT - for the disadvantage - you can never become… President of the US. The 'disadvantages' (if you choose to call them that) are that you also assume all the obligations of being a US citizen as well.
Advantages: Natural gas (largely methane) burns more cleanly than the other fossil fuels (45% less carbon dioxide emitted than coal and 30% less than oil)It is easily tra…nsported via pipelines and fairly easily using tankers (land and sea)It can be piped into homes to provide heating and cooking and to run a variety of appliances.Where homes are not piped, it can be supplied in small tanks.It can be used as a fuel for vehicles (cars, trucks and jet engines) where it is cleaner than gasoline or diesel.It is used to produce ammonia for fertilizers, and hydrogen, as well as in the production of some plastics and paints.It's relatively abundant, clean burning and seems easy to distribute. It's also lighter than air, so if there is a leak it will tend to dissipate, unlike propane, which is heavier than air and pools into explosive pockets.It can be used for heating, cooking, hot water, clothes dryer, backup generator power, and so forth. Some places will supply it to your house by way of underground pipes.Natural gas is more economical than electricity, it is faster when used in cooking and water heating and most gas appliances are cheaper than electrical ones. Gas appliances also do not create unhealthy electrical fields in your house. Disadvantages: Even though it is cleaner than coal and oil, it still contributes a large amount of carbon dioxide to greenhouse gases.By itself natural gas is mostly methane, which is 21 times more dangerous for greenhouse warming than carbon dioxide so any leakage of the gas (from animals, landfills, melting tundra, etc) contributes strongly to greenhouse emissions.If your house is not properly insulated it can be very expensive.It can leak, potentially causing an explosion. A: 1. Natural gas use requires a separate and special plumbing system inside structures. 2. Natural gas is colorless, tasteless, AND IS ODORLESS IF IT IS NATURAL, requiring the addition of an odorant [one or more of several "Mercaptans"] to allow olfactory detection [smell] of leaks. 3. When gas from an underground leak travels great distances [underground], the odorant can be "scrubbed out" of the gas, thereby rendering it again ODORLESS, and therefore a severe explosion and fire hazard. 4. Being a fossil fuel, it is carbon based, and its byproducts of combustion include carbon compounds [such as carbon dioxide and/or monoxide] which contribute to the environmentally damaging "greenhouse effect." A: One disadvantage is that burning it creates CO2 emissions (although not as much as oil or coal), and CO2 is a greenhouse gas. Natural gas itself is actually a very strong greenhouse gas also (much more than CO2 in fact). Another disadvantage is that it can leak and cause fires and/or explosions. A: As noted above, Natural Gas is a fossil fuel. I am skeptical of calculations that it produces less carbon dioxide than other fossil fuels, although it does burn cleanly and efficiently. In some places, Natural Gas is considered a waste gas, and excess methane is just burnt in the atmosphere without using any of the energy it carries. For efficiency, we should be utilizing all of our fossil fuel hydrocarbons. Some communities are now investing in recovering natural gas from garbage dumps and farming for energy production. There is more of this that we could be doing. As far as fueling automobiles with either Compressed Natural Gas (CNG) or Liquid Natural Gas (LNG), the refueling process is slow (slower than using propane), and high pressures are required. And there are dangers of carrying around CNG or LNG tanks in vehicles. A: If we are to believe scientists concerning global warming, we need to look at the two products here. Natural gas is mostly methane (as previously pointed out). Natural gas also escapes into our air naturally. Methane is many times more of a forcing agent in terms of green house effect. Converting methane into Carbon dioxide (a less substantial green house gas) would reduce our overall forcing in terms of real forcing. There are several advantages to using compressed natural gas (CNG) to power vehicles. First, it is the cleanest burning fuel available. This reduces harmful emissions, which helps air quality. Secondly, there is an abundance of natural gas right below our feet. Increasing the production of natural gas would make the US less reliant on foreign sources for its energy, which would also help its national security. Third, as a result of the abundance of natural gas, it is much cheaper than diesel or gasoline. There are many areas throughout the US where natural gas is close to or less than $2 per gallon. A: The gas orduces lots of energy and is easy to transport using pipelines. D: It produces more pollution than oil and if it leaks natural gas can cause a big explosion and/or fire Answer: Advantages of natural gas: - It is a very clean burning fuel - There is an abundance of it throughout the world - the U.S. has the 6th largest reserve of natural gas in the world - It is about half the price of gasoline - It can be used in vehicles and is very efficient - It is used to heat most homes - It is easy to recover it from shale Disadvantages of natural gas: - There are only about 1,000 fueling stations across the U.S. open to the public - There aren't very many cars that use it yet One advantage of natural gas is its abundance in the U.S. Our country has the 6th largest natural gas reserve in the world. Natural gas also has the advantage of being the cleanest burning fuel available. its renewable!! it can help keep other gases from the destroying the atmosphere(good for the enviornment) and it also made vampires decay in the caves back then so there arent any more alive...(or are there?) Also natural gas is used for fuel... and other things that have to use power Natural gas is a carbon fuel so burning it generates the greenhouse gas carbon dioxide. However this produces less carbon dioxide than the same amount of energy from burning oil or coal, so natural gas is slightly cleaner than other fossil fuels.
Advantages: It only cuts down the valuable trees that are needed meaning it leaves a larger range of biodiversity. Disadvantages: Selective logging can harm the trees surrou…nding the ones being targeted which can be more disastrous than normal logging as it can cause diseases through the trees. On average, for every tree that is cut down for selective logging, 4 more are injured and are left. that is a large waste of wood, meaning they have to cut down more trees to make up for the wasted wood.
Advantages: Easy to implement In-place sort (requires no additional storage space) Disadvantages: Doesn't scale well: O(n2)
The advantages of natural resources would be that they can be used in everyday life, and they're made from the earth. Some disadvantages would probably be that oil is a natu…ral resource and it can kill animals, coal factories fumes are killing trees and leaving off toxic fumes, and oil drilling harms animals habitats, in the ocean or on land.
Various advantages of selective distribution include reduced costs, increased market coverage, and better control over sales. Disadvantages may include that it does not co…ver the market well enough or that it becomes difficult to match specific retailers and dealers to your needs.
disadvantage: selective breeding gets rid of variety advantage: selective breeding rules out weakness and disability disadvantage: isn't that what Hitler tried to do with …humans in WWII? do we really want to be like him? Selective breeding(or artificial selection) produces traits which may be advantagious to us, but be a disadvantage to the animal.Here are some examples-The lapps of northern Europe herd and breed the wild deer, selecting docile animals. The resulting herds could not survive in the wild.Cows with big udders are good for us , but are probably painful for the cow. English bulldogs mght be considered a cool looking dog, but have breathing difficulties and such small pelvises that they often have to give birth by causation. Advantages: Can produce fitter, stronger animals or animals of a higher yield of milk, meat or eggs for example. Can produce animals better suited to survive in poor climates or marginal conditions, thus preserving human food supplies and saving life. Can ensure the eradication of hereditary sickness in some blood lines. Disadvantages: For show animals such wild kitten eatingas some dogs, it is practised quite strictly by breeders aiming at a certain look which is set down as the breed "standard"- many Dalmation puppies are euthanased because they do not exhibit the breed standards for example, so there are serious moral questions to it too.Too much close interbreeding to obtain certain cosmetic traits can also result in the amplifying of inherent illnesses - like the bulldogs mentioned above, or German shephered dogs with hip problems and so on - in fact, these issues are rapidly worsening in recent years with dogs in particular. keep in mind it will eat your babies if you anger them.
Advantages * Clean air * Beauty * Herbal medicine * Good places for meditation * Outdoor sports * Connection to the elements * More calm - less stress… * Better health in general * Possibility to grow or pick your own food Disadvantages * Mosquitoes and other insects * Wild animals that can attack * Roots of trees can break the foundations of a house
Advantage is that some natural resources are renewable, ex: trees, disadvantage well some are nonrenewable, ex: oil.
Selective tendering has a low cost for production of tender documents since there is a small list of selected firms to tender. Price will be the main determinant for selection…, since all other considerations would have been done already making the analysis process simple and faster.
well some times they come out with deformities not bad ones but there are some risks the advantages is that they come out looking better than ever
advantages: we get more breeds and more animals/plants easier people can make more more Disadvantages the animals/plants can have genetic diseases It is har…d to get rid of the genetic diseases because you have to breed them out
pros: 1: an interviewee might feel comfortable in one to one interview rather panel interview. he might get confused or feel hasitation facing many people at a time. so h…e might not be able to answer well. cons: 2: if a company takes only one to one interview, then it can not judge its candidate weather they can face a critical situation or not.
because then you can choose if you want a male or female baby,
please advt they are smoother disadvt they are costly
An advantage of a natural disaster is that communities are brought together. Disadvantages are that natural disasters destroy homes and lives.