Social Sciences

A dichotomous key works by using a set of questions to eliminate choices until you get down to the one choice you are looking for.

Example: frog turtle gator

Does your animal have a shell? No-Go to question 2,Yes-Turtle.

Does your animal hop for movement? No-go to question 3, Yes-Frog

Does your animal have sharp teeth? Yes-Gator

Of course, most keys have more than 3 options.

There is no "limestone plateau" in Mexico. You either refer to 1) The Mexican Central Plateau, which is an altiplano found in central Mexico where cities such as Mexico, Toluca Guanajuato or Queretaro are found or 2) the Yucatan peninsula, a flat land mostly composed of limestone that can be found on southeastern Mexico.

A geographer would likely study human geography in depth, which focuses on the spatial patterns and relationships between people and their environment. This may include topics such as population distribution, urbanization, cultural landscapes, and globalization.

The wax of the candle and some oxygen in the air are converted into some carbon soot, water vapor, some complex hydrocarbons in the smoke, and carbon dioxide.

If you stand a small candle on a saucer and cover it with a tall glass, you can see each of these things. The candle will burn the oxygen in the glass. You will see the carbon dioxide and smoke fill the bottom of the glass. You will see a little water condense on the side of the glass, and the top of the glass will be blackened with the soot.

When the level of smoke and CO2 reach the level of the flame, the candle will go out.

In the US, owning birds of prey is legal with a proper license and permit. The Migratory Bird Treaty Act and the Bald and Golden Eagle Protection Act govern the ownership and handling of birds of prey. It is essential to undergo training and obtain the required permits from the US Fish and Wildlife Service to own these birds legally.

2008 was a leap year starting on Tuesday. The next time such a calendar can be used again is in 2036.

Applying a force to an object can change its motion by either speeding it up, slowing it down, or changing its direction. This acceleration is described by Newton's Second Law, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Madang is located at approximately 5.2249° S latitude and 145.7969° E longitude.

A substance is a general term used to describe matter with uniform properties, while a pure substance refers to a substance with a specific chemical composition and constant properties throughout. In other words, pure substances consist of only one type of atom or molecule, whereas substances can be mixtures of different components.

global population is rising exponentially - it needs an even higher exponentially rising oil production to sustain - oil is finite and is now declining - we will witness the collapse! - it is inevitable and real data show that it will collapse within 5 - 20 years and will be history in 2040. how it will collapse?

oil production will surpass a certain level which will trigger the fragile global oil driven agriculture to stop into a grinding hold.

scarcity, famine, pogroms, war and nuclear exchange are inevitable.

nobody will starve to death voluntarily. 7 of 9 billion will die in less than 5 years.

95% of all food is provided by the use of oil. the other 5% by the use of coal, natural gas and domestic animals.

our politicians simply want to win year after year of the status quo. which means growth. there will be one bad year when the status quo doesn't hold any longer and it will be soon.

A map legend explains the symbols used on a map and their meanings. The scale shows the ratio of distance on the map to actual distance on the ground. A compass rose indicates the orientation of the map in terms of the cardinal directions (north, south, east, west).

The Appalachian Mountains start in Alabama in the south and extend all the way to Maine in the north, covering about 1,500 miles. They are a major mountain range in the eastern United States.

Materials such as ceramic, glass, and rubber are good insulators and offer high resistance to electricity. Conductor materials like copper, aluminum, and gold, on the other hand, have low resistance to electricity.

Water is the most dense in solid (ice) form.

There is no one-size-fits-all solution to the problems caused by cell growth, as it can vary depending on the specific context. However, some approaches include targeted therapy to inhibit abnormal cell proliferation, early detection through screening programs, and lifestyle changes to reduce risk factors associated with uncontrolled cell growth, such as smoking cessation and a healthy diet. In some cases, surgery, chemotherapy, radiation therapy, or a combination of these treatments may be necessary to manage cell growth-related conditions like cancer.

Crude oil is separated into fractions through a process called fractional distillation. This involves heating the crude oil to different temperatures in a fractionating column, which separates it into different components based on their boiling points. The lighter fractions with lower boiling points rise to the top, while the heavier fractions with higher boiling points collect at the bottom.

The output work equals the input work in a machine when there are no energy losses within the system. This can happen in ideal situations where all energy input is fully converted into useful work output, without any friction, heat losses, or other inefficiencies. It is a theoretical scenario that is typically not achieved in real-world machines due to factors like friction and inefficiencies.

Human beings derive nutrition from the food they eat. The food eaten is converted into simple organic substances by process of digestion. They are then absorbed into the blood stream where the are then transported by blood to various cells of the body.

A pattern of flowing heat energy is known as convection. This process involves the transfer of heat through the movement of fluid, such as air or water, due to differences in temperature. Convection is commonly observed in phenomena like ocean currents, weather systems, and boiling water.

A social trait is a characteristic or behavior that an individual exhibits in social situations. These traits can include being outgoing, friendly, assertive, or empathetic, influencing how individuals interact and communicate with others. Social traits play a significant role in shaping an individual's social relationships and interactions.

I actually read (from the Harvard Medical School website) that cancer cells rely on normal, healthy genes and cells as much as they rely on mutated ones. Also, they can only survive if the cell that they are living in is low on oxygen. Just like we need oxygen to survive (that's why we can't survive on Mars, people!!!) cancer cells need low oxygen to survive...

Addendum:

While irreverently stated, the above author was quite correct. A cancer cell is ultimately has the same needs as any other cell which primarily consist primarily of oxygen and other nutrients delivered by the blood. For this reason, tumors are often associated with angiogenesis (formation of new blood vessels as tumors that are unable to receive adequite nutrients cannot grow).

During interphase, a cell undergoes growth and prepares for cell division by duplicating its DNA. It also carries out normal cellular functions, such as protein synthesis and metabolic activities, to support its growth and maintain homeostasis.

The two factors that influence the force of gravity are the mass of the objects and the distance between them. The greater the mass of an object, the stronger the force of gravity it exerts, and the closer two objects are to each other, the stronger the gravitational force between them.

Spas spend varying amounts on electricity depending on factors like size, location, and amenities offered. On average, a small spa might spend a few hundred dollars per month, while larger spas with saunas, pools, and extensive equipment could spend several thousand dollars per month. Regular maintenance of equipment and energy-efficient practices can help reduce electricity costs.