5 abiotic factors affects

Describe 3 abiotic factors that could affect biotic potential (population growth) and how they would affect it

first of all, what is a abiotic factor: its weather, climate, mineral availability, non-biological pollutions, radiation ect.
these are they're affects on the population (read below)

(1) birth rate or natality rate -

(2) death rate - many people can get sick and die of a heat stroke or also the oppisite because its very cold and the warmth of their body could not help them beat the cold,.

(3) age composition-






(4) immigration - is the permanent entry of new individuals of same species into a population from outside. It increases the size of local population.

(5) emmigration - \Population growth = (Birth + Immigration) (Death + Emmigration)

POPULATIONS

Describe why sampling is important to the study of populations.

wells its called epidemiology- the study of people. anyways i believe the reason why we do this is to kind of keep track of the people, i know that epidemiologist keep records of those you in war and die from them, who has a "std"(sexual transmitting disease) and from those you don't, from teens who are with child and those who aren't ... all above these are examples of what can or could be important of studying the population.

and to include on my paragraph above, i would say if we didn't keep track or records we really would be clue less and maybe overly populated and the earth would maybe be gone, and we probably wouldn't even be here today, well thats all what i am saying.

BIOME

Which biome would you most like to visit? The Ocean Biome Why? Because I would like to learn more of the four main oceans: the PACIFIC, ATLANTIC, INDIAN, and ARCTIC.
Opinion: Why is it as important to know about the water ecosystems as the terrestrial?
This research element studies the potential effects of global change on goods and services provided by aquatic and terrestrial ecosystems, using observations, experiments, modeling, and syntheses to focus on critical emerging questions. Newly initiated projects in terrestrial ecosystems are addressing cause-and-effect relationships between climatic variability and change and the distribution, abundance, and productivity of native and invasive organisms. Research is continuing into understanding how increasing CO2 levels affect plants and microorganisms. Research in a Chesapeake Bay ecosystem is generating data to evaluate and forecast effects of warming, changes in fishing pressure, and eutrophication on economically important estuarine ecosystems. In the ocean, coral reef research is helping scientists and managers identify climatic and non-climatic stressors and thereby better manage these important ecosystems. The terrestrial and aquatic ecosystems that make up the biosphere provide vital goods and services to humanity, including food, fiber, fuel, genetic resources, pharmaceuticals, cycling and purification of water and air, regulation of weather and climate, recreation, and natural beauty. Recent and ongoing global environmental changes—including climatic change, changes in atmospheric composition, land-use change, habitat fragmentation, pollution, and the spread of invasive species—are affecting the structure, composition, and functioning of many ecosystems, and therefore the goods and services that they provide. In turn, many ecological effects of global environmental change have potential to affect atmospheric composition, weather, and climate through both negative and positive feedback mechanisms.

Yukon River salmon is one of the keystone species

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Should re-wielding species be keystone species? How could re-wielding be made successful?

Recent developments regarding restrictions on the Yukon River salmon are encouraging from a conservationist point of view. It is, however, essential that the chinook salmon be recognized as a "keystone species" in the Northwest ecosystem as it is a vital food source for a diverse group of predators.

The ongoing depletion of the chinook stocks affects not only the fisheries, but the stability of many other animal populations.

The U.S. government is attempting to avoid extinction by restricting commercial and subsistence harvests of this species. However, decreasing gillnet size by one inch might not prove sufficient to avoid bycatch nor might it ensure upstream migration to spawning sites.

The government should reduce gillnet fishing in favour of more selective fishing techniques such as fish traps and wheels. Also, hatchery-raised chinook salmon can be released into the Yukon River to increase population size. It is imperative that stocks recover and that affected river fishermen receive the government help for which they are eligible.

Our Waste

What surprised you most about the waste we create over a lifetime?

Diapers!!!

The impact of disposable diapers and cloth diapers on the environment. The pro-disposable diaper advocates say that the extra water used to wash cloth diapers is just as much of an abuse to the environment as the production and disposal of disposable diapers. But taking into consideration the following estimates you will probably agree that disposable diapers are much more harmful to the environment than cloth diapers.

It is estimated that roughly 5 million tons of untreated waste and a total of 2 billion tons of urine, feces, plastic and paper are added to landfills annually. It takes around 80,000 pounds of plastic and over 200,000 trees a year to manufacture the disposable diapers for American babies alone. Although some disposables are said to be biodegradable; in order for these diapers to decompose, they must be exposed to air (oxygen) and sun. Since this is highly unlikely, it can take several hundred years for the decomposition of disposables to take place, with some of the plastic material never decomposing.

The untreated waste placed in landfills by dirty disposable diapers is also a possible danger to contaminating ground water. Pro-disposable advocates say that cleaning cloth diapers uses more energy and contributes to the load on sanitary sewer systems and potential water pollution. This view really makes no sense if you think about it. The amount of water used per week to wash cloth diapers at home is about the same amount consumed by an adult flushing the toilet four or five times daily for a week. Also, the greater amount of water and energy being used by diaper service companies to wash large amounts of cloth diapers multiple times; the per diaper impact on energy and water supplies is actually less than home washing.

Finally, when flushing solids from a cloth diaper down the toilet and washing the diapers in a washing machine, the contaminated, dirty water from both toilet and washing machine go into the sewer systems where they are properly treated at wastewater plants. This treated wastewater is much more environmentally friendly than dumping untreated soiled disposable diapers into a landfill.

Diets

What can diet tell us about the organisms that are eating?

Believing our genes are nutritionally tied to the Paleolithic age, some scientists are hunting for clues and gathering answers that may shed light on modern disease and dietary imbalances.

We live in a digital age—a world in constant motion, constant change. So one may question, understandably so, what today’s technology-toting, fast-food–frequenting individuals could learn by looking back on the lives of hunter-gatherers from the Paleolithic Era, a period that lasted about 2.5 million years and ended around 10,000 years ago with the development of agriculture. According to some scientists, modern humans could gain some valuable dietary insight.

Arguments exist regarding the specifics of hunter-gatherer cuisine, partly because diets varied widely depending on the region and partly because hunter-gatherers existed over a period of thousands of years, during which different foods were likely available and utilized. But scientists generally agree that our Paleolithic hunter-gatherer ancestors likely ate a combination of foods that could be hunted or fished, including lean meats and seafood, and some that could be gathered, such as fruits, plants, nuts, eggs, insects, mushrooms, herbs, and spices.

In comparison, estimates indicate that up to 70% of Western dietary calories could come from foods that weren’t available to those living in the Paleolithic Era (think refined cereals, sugars, and vegetable oils). And although our world may be evolving at a digital speed, according to some scientists, many of our genes are still stuck at the hunter-gatherer dinner table.

vegetarian or vegan

Would you consider becoming a vegetarian or vegan? Why or why not?

Vegetarian - dosen't eat meat at all. Vegan - dosen't eat anything that has came from and animal or eat the animal. I realy think don't think that I could be either because I love meat. All types I think, or I am willing to try. Im a meat eater and I do have a family member my little sister who has actually have became a vegetarian. I see her only eat junk; chips, cookies, cheese pizza, candy, and popcorn.

To many people it might seem healthy to become a vegetarian or vegan, but you dose are at a risk of not taking real good care of yourself , you can become realy sick and weak by not having alots of iron (which are in meat) and that is also a reason why I may never become one or the other.