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Social Sciences

The study of human society and of individual relationships in and to society.

5,538 Questions

When was there a new focus on science and technology?

There has been a continuous focus on science and technology throughout history, but there was a notable shift towards this in the late 20th and early 21st centuries due to rapid advancements in fields such as computing, biotechnology, and space exploration. This has been driven by increased investment, globalization, and the importance of innovation in a rapidly changing world.

Why are carbohydrates excellent sources of energy for organisms?

While many life forms use carbohydrates as an energy source, some don't. Plants use sunlight to make carbohydrates (photosynthesis) which they later retrieve as energy but the source of the energy is the sun. Animals use carbohydrates.

There is one interesting exception to this usual case. Black smokers (deep sea volcanic vents) support a varied array of life based on chemo-synthesis which uses sulfidic compounds as the energy source to manufacture carbohydrates for the higher lifeforms.

Is it true or false that the Greek Eratosthenes is known for his calculation of the earths weight?

False. He is the first known person to calculate the circumference of the earth. Wikipedia has more information in their post on this interesting fellow. A link to the post is provided below.

From which set of polar and equatorial diameters can the actual shape of the Earth be inferred?

By comparing Earth's polar (12,714 km) and equatorial (12,756 km) diameters, we can infer that Earth is an oblate spheroid. The slight bulge at the equator is due to the centrifugal force caused by its rotation, resulting in a slightly flattened shape at the poles and a bulging equator.

What are eugenics?

Eugenics is a term referring to the science of improving the racial qualities of humanity through selective breeding of superior types. It was first used by the British scientist Francis Galton in 1883. Galton studied evolution and explored how hereditary traits were passed on from generation to generation. An example of this is when Galton attempted to determine "The Face of Crime". Galton combined sets of twelve photographs to form an "ideal type" for criminals.

Is copper a solid at room temperature?

Yes copper is a solid. It is formed out of natural gas particles in the air around it when it is frozen into shape. It's color is fond of the mercurarious color Gold & has 50 % oxugen combined with 50% gold to give it its color. David Oftenson U.S.A

Which pair is classified as chemical substances?

Water and salt are classified as chemical substances. Water is made up of hydrogen and oxygen molecules, while salt is made up of sodium and chloride ions. Both substances undergo chemical reactions to form new compounds.

Earthquake resilient structure?

"Earthquake-resistant construction, vibration control

construction and construction of vibration isolation

have been proposed as architectural structural

systems resistant to vibration. The SRB-DUP structure

is newly proposed as a type of earthquake-resilient construction,

different from the three above-mentioned

systems. Earthquake-resilient construction is a structural

system based on the principle of not bonding

materials of different kinds to each other. Its structural

members demonstrate high vibration energy absorption

capacities on their strong axes, and resiliency on

their weak axes by effectively using the voids existing

between their elements."

Yamaguchi, Kentaro, Matsufuji, Yasunori and Koyama, Tomoyuki(2007)'A new structural system: friction-resistant

dry-masonry',Building Research & Information,35:6,616 - 628

Scott (ARCE student)

How do animals get the energy they need?

Animals get the energy they need by consuming food that contains nutrients such as carbohydrates, fats, and proteins. These nutrients are broken down during digestion, releasing energy that is stored in the form of molecules like ATP. The energy stored in ATP is then used by cells in the body for various processes like growth, movement, and reproduction.

What is the efficiency of a machine that miraculously converts all the input energy to useful output energy?

The efficiency of such a machine would be 100%, as all the input energy is converted to useful output energy without any losses. This would be an ideal scenario but is not practically achievable due to factors such as friction, heat dissipation, and other forms of energy loss in real-world machines.

What is pinewood used for?

Pinewood is commonly used for making furniture, flooring, cabinetry, and various indoor construction projects. It is also a popular choice for crafting items such as toys, musical instruments, and decorative pieces due to its affordability and workability. Additionally, pinewood is often used in woodworking projects that require a lightweight and easily manageable material.

How do you conserve energy at home?

To conserve energy at home, you can:

  1. Use energy-efficient appliances and lighting.
  2. Adjust your thermostat to save heating and cooling costs.
  3. Unplug electronic devices when not in use and use power strips to easily turn multiple devices off.
  4. Utilize natural light during the day and switch to LED light bulbs.

What does atomos mean in greek?

"Atomos" in Greek means "indivisible" or "uncuttable." It refers to the concept of the smallest possible unit of matter that cannot be divided any further, as proposed by ancient Greek philosophers like Democritus.

What the red blood cell function?

Red blood cells, known also as RBCs, have several important roles to play in our bodies. The primary function of red blood cells is to carry oxygen from the lungs to the tissues around your body. As a secondary function, they are also a key player in getting waste carbon dioxide from your tissues to your lungs, where it can be breathed out. When red blood cells stop functioning properly, you can rest assured that many things are going to go wrong in your body

What is unusual about the sun compared to many other stars?

It is unique only in the fact that is is 'our' star.

Apart from that it is a perfectly normal G type star on the main sequence. Of which there are many millions. And is also not just any random star its the closest star to are home and mother earth. Its gives us seasons warmth,light,power through are solar systems.

Explain what happens to light when it is reflected refracted transmitted and absorbed by matter?

The last person who wrote this answer was a nimrod and a moron. Okay, so the answer to your question is that light is interacting with the object and/or matter by scattering and bouncing off of it/them.

What are the examples of diffusion in daily life?

Kool-aide mix being stirred into water. Cologne or perfume permeating the air in a room. It starts strong on side A but within time one can smell the scent on side B of the room because the molecules of cologne have diffused throughout the air. The molecule attempt to move from areas of high concentration, side a, to areas of lower concentration, side B, and the process of diffusion continues until the entire room boasts a constant concentration.

A main use of diffusion is in the exchange of oxygen into muscles from the blood cells in the blood stream. This relates the structure and function of muscle tissues and fibers and diffusion to our daily life. The more oxygen surrounding the muscle tissue, the greater the rate of diffusion of oxygen into the muscle tissue. This lends to the importance of the structure of the muscle tissue and the set up of blood vessels. Muscle fiber is created to be long and have capillaries surrounding each fiber. Blood carrying oxygen enters the capillaries and flows parallel to the fibers, diffusing its oxygen while flowing down the capillary. Thus with the elongated muscle and web of capillaries, there is more surface area available for diffusion. If more blood containing oxygen is around the muscle then more oxygen will be transferred. Inhibiting bodies in the blood stream will slow the diffusion rate of oxygen to the muscle. An example of this is cholesterol. Cholesterol in the blood stream would have an adverse effect on the circulatory system in the body and would inhibit the transfer of oxygen to the muscles and other tissues of the body.Without diffusion our muscle would be unable to be supplied oxygen and therefore unable to function.

If you travel 975 miles an hour what is the velocity in meters per second?

To convert miles per hour to meters per second, you can use the conversion factor of 1 mile per hour is equal to approximately 0.44704 meters per second. Therefore, traveling at 975 miles per hour is equivalent to approximately 435.84 meters per second.

Which has a greater density oil or vinegar?

vineger,because oil can flot on water which means its light but vineger is hever which stays on the grown

Where is place between mountains where roads can be built?

A valley is the area between mountains where roads can be built. Valleys provide a naturally occurring path with less steep terrain compared to the mountains themselves, making it easier to construct roads for transportation purposes.

Carbon dioxide and water are waste products of which process?

Water isn't but carbon dioxide is the air you don't need and thats kind of waste.

The info collected during an experiment is called?

The information collected during an experiment is called data. This data is used to analyze the results of the experiment and draw conclusions based on the findings.

What are physical attributes of stars inthe night sky?

Stars in the night sky have various physical attributes such as luminosity, temperature, size, and mass. These attributes determine their appearance, color, and brightness. Additionally, stars can also exhibit characteristics like variability and spectral features.

What was Vasco de balboa's major accomplishment?

Vasco Núñez de Balboa's major accomplishment was being the first European explorer to reach the Pacific Ocean from the New World, crossing the Isthmus of Panama in 1513. This significant achievement helped solidify Spain's claim to the lands of the Pacific and opened up new trade routes to Asia.