Q: Carrying capacity was originally used to determine the number of animals that could graze on a segment of land without destroying it. Later, the idea was expanded to more complex populations, like humans. For the human population, more complex variables such as sanitation and medical care are sometimes considered as part of the necessary establishment. As population density increases, birth rate often increases and death rate typically decreases. The difference between the birth rate and the death rate is the ''natural increase''. The carrying capacity could support a positive natural increase or could require a negative natural increase. Thus, the carrying capacity is the number of individuals an environment can support without significant negative impacts to the given organism and its environment. Below carrying capacity, populations typically increase, while above, they typically decrease. A factor that keeps population size at equilibrium is known as a regulating factor. Population size decreases above carrying capacity due to a range of factors depending on the species concerned, but can include insufficient space, food supply, or sunlight. The carrying capacity of an environment may vary for different species and may change over time due to a variety of factors including: food availability, water supply, environmental conditions and living space. The origins of the term ''carrying capacity'' are uncertain, with researchers variously stating that it was used ''in the context of international shipping'' or that it was first used during 19th-century laboratory experiments with micro-organisms. A recent review finds the first use of the term in an 1845 report by the US Secretary of State to the US Senate.
Can we conclude that is carrying capacity the same for all species?
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A: no
On July 28, 2014, Dollar Tree announced that it would buy Family Dollar for $8.5 billion. The sale delivered a windfall to the company's biggest shareholder Carl Icahn, who acquired his 9.4 percent stake in June 2014. On January 22, 2015, Family Dollar shareholders approved the Dollar Tree bid.
is dollar tree and family dollar the same company?
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Answer: yes
Treadwell's video camera captured an audio record of the bear attack. Herzog refrained from making this a part of the film, but he is shown listening to it, clearly disturbed. The director advised Jewel Palovak (the owner of the tape) to destroy it rather than listen to it. He later repudiated his own advice, saying it was

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does the grizzly man movie show his death?

A: no
Problem: Text: The mitral valve (/matrl/), also known as the bicuspid valve or left atrioventricular valve, is a valve with two flaps in the heart, that lies between the left atrium and the left ventricle. The mitral valve and the tricuspid valve are known collectively as the atrioventricular valves because they lie between the atria and the ventricles of the heart.

Question: is the bicuspid valve the same as the mitral valve?

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A: yes
IN: Is it true that is the united states in world cup this year?

The United States men's national soccer team has played in several World Cup finals, with their best result occurring during their first appearance at the 1930 World Cup, when the United States finished in third place. After the 1950 World Cup, in which the United States upset England in group play 1--0, the U.S. was absent from the finals until 1990. The United States has participated in every World Cup since 1990 until they failed to qualify for the 2018 competition after a loss to Trinidad and Tobago in 2017.

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OUT: no
IN: Is it true that does the colorado river still reach the ocean?

Reduction in flow caused by dams, diversions, water for thermoelectric power stations, and evaporation losses from reservoirs -- the latter of which consumes more than 15 percent of the river's natural runoff -- has had severe ecological consequences in the Colorado River Delta and the Gulf of California. Historically, the delta with its large freshwater outflow and extensive salt marshes provided an important breeding ground for aquatic species in the Gulf. Today's desiccated delta, at only a fraction of its former size, no longer provides suitable habitat, and populations of fish, shrimp and sea mammals in the gulf have seen a dramatic decline. Since 1963, the only times when the Colorado River has reached the ocean have been during El Nino events in the 1980s and 1990s.

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OUT:
no