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Science

The observation, identification, description, experimental investigation, and theoretical explanation of phenomena is all part of science. Nothing is immune to the scientific process: from charm quarks that haven't existed naturally since the beginning of time to Pluto, recently demoted from planet to dwarf planet. Questions on knowledge about the material and physical aspects of our world are asked and answered here.

203,801 Questions

Why do cells and a developing embryo differentiate?

Cells have two be different otherwise the different cell types in our bodies wouldn't be able to do different jobs:

e.g. red blood cells have no nucleus, this is so more oxygen can be stored and move around the body; a bladder cell has a nucleus like all other cells but unlike other cells it can stretch to hold any extra fluid before it is removed out of the body.

Well done.

What are primary light colors?

Red, green, and blue. If you go to a play and look at the lights above the stage they usually have a red, blue, or green covering. When they mix they make white light. Hope this helps :)

Which greek god is the reason for winter?

In Greek mythology, Demeter, the goddess of harvest and agriculture, is often associated with the changing seasons. When her daughter Persephone was taken by Hades to the underworld, Demeter's grief caused her to neglect her duties, leading to the barren winter months.

What parts of the eye are used to see colour?

The cones in the retina of the eye are responsible for detecting and perceiving color. There are three types of cones that respond to different wavelengths of light (red, green, and blue), and the brain processes the signals from these cones to create the perception of color.

Are most of the atoms around us younger or older than the sun?

Most of the atoms around us are older than the sun. These atoms were formed in previous generations of stars before our sun existed.

Why was air superiority so important?

Air superiority is important in conflicts because it allows one side to have control of the skies, enabling them to conduct reconnaissance, provide close air support to ground troops, and disrupt enemy operations. Without air superiority, an army can be vulnerable to aerial attacks, hindering their ability to maneuver and carry out successful operations.

What class does slate represent?

Slate is a fine-grained metamorphic rock that falls under the class of metamorphic rocks. It forms from the low-grade metamorphism of shale or mudstone, resulting in a rock with distinct slaty cleavage and often used in roofing, flooring, and other construction purposes.

What can be the reason why the edges of the leaves often have water droplets?

Water droplets on leaf edges are often caused by a process called guttation, where water is pushed out of the plant due to root pressure. This is more likely to happen at night when transpiration is low. Guttation helps regulate water balance in the plant and is a natural phenomenon.

Where are the sun's rays most direct during an equinox?

During an equinox, the sun's rays are most direct at the Earth's equator. This is because during an equinox, the tilt of the Earth's axis is such that the sun is directly over the equator, leading to equal day and night lengths at all latitudes.

What are the disadvantages of robots in space?

it would be hard to maintain them if there in space. they would have to be programed in there heads how to charge them selves and how to fix themselves. if would be hard to keep up with them because they will break at one point so we would have to be able to send more up if needed but we would have to keep total control over them because we don't want anotherRevelution on our hands.

Have humans ever set foot on mars?

No put science smarties have sent robot to do an experiment if its safe or not but they have got no answers till now

Did Sally Ride found Sally Ride Science in 2001?

She died in l979 so this is unlikely. One of her acts the Bubble Globe thing, ideal for Carnivals, did have some sci-fi, overtones. Mr. Exeter, give us some harmonics on the Interociter! Weire noises and , and yes, give us a Gravity shade, some guys from the Knights of Columbus are afoot! Live long and prosper, comrade.

What is the likely result of staring at a monitor for a long time?

Staring at a monitor for a long time can lead to eye strain, dry eyes, headaches, and blurred vision. It can also disrupt sleep patterns due to the blue light emitted by the screen. Taking breaks and adjusting screen settings can help reduce these negative effects.

Can water dissolve thinner?

Yes, water can dissolve mineral spirits, which is the primary ingredient in paint thinner. However, it is important to note that this process may take some time and is not as effective as using the intended solvent for thinners.

Why are dust storms more common in country areas than in capital cities?

Dust storms are more common in country areas due to factors such as open terrain, dry soil, and agriculture practices that can lead to soil erosion. Capital cities typically have more infrastructure and green spaces that can help prevent the spread of dust particles.

How the temperature changes with altitude?

Each 1000ft of ascent will bring a cooling of about 3 degrees Centigrade, so at 15000 feet the temperature would have fallen by 45 Centigrade degrees. That seems a lot but that was our basic guide in wartime when we learned to fly. If the cockpit canopy didn't close too well your nose would suffer unless it was inside your flying mask.

What are some structures and organelles that are involved in protein synthesis?

Structures involved in protein synthesis include ribosomes (where actual protein synthesis occurs) and the endoplasmic reticulum (where newly synthesized proteins are processed and packaged). Organelles involved are the nucleus (where DNA is transcribed into mRNA) and the Golgi apparatus (where proteins are modified further and sorted for transport).

When does a hot air balloon float highest in the sky?

I think the hotter the fire is ( I'm not really sure on how to make fire hotter! :) sorry!) the higher the balloon goes. because hot air rises and so it seems right that if the air is hotter it will rise higher. if you are reading this answer then, you rock!!

When did the first atomic explosion occur?

"The first atomic explosion occurred on 16 July 1945 at the Alamogordo Test Range in New Mexico, during a test called Trinity."

What does a aneroid barometer look like?

Aneroid barometers usually look like a clock. A compact round cylinder with a glass front and a dial with pointer.

Unlike mercurial barometers there is no need for a long case.

Aneroid types use a small, collapsible, sealed metal can, to detect changes in pressure. The minute deformity of the can, is amplified by levers to turn the dial. all this can be held in a small instrument case, the size of a wall clock.

How many people in the world in 2025?

The population of the world has been increasing steadily for a number of centuries now. It won't continue to do so indefinitely, but it can continue to increase for at least a while longer. The year 2025 is only another 13 years from now, as I type, so a reasonable guess is that the population will increase by then to perhaps 8 billion.

Why is the island of Newfoundland often considered the foggiest place on earth?

Newfoundland is often considered the foggiest place on earth due to its location at the meeting point of the warm Gulf Stream and the cold Labrador Current, creating ideal conditions for fog formation. Additionally, the island's rugged coastline and proximity to the ocean contribute to the high frequency of foggy days.

Which planet has a diameter that is about four times the diameter of Earth?

Both Uranus' and Neptune's diameters are about four times bigger than the Earth's, but Uranus is the closest, with about 50 000 km. The Earth's diameter is 12 756 km, and 4 times bigger than that is 51 024.

Is there evidence that cloned animals suffer from health problems?

There is evidence to suggest that cloned animals can experience health problems, such as genetic abnormalities, early aging, and increased risk of infections and illnesses. These issues are often linked to the cloning process itself, as well as the epigenetic changes that can occur during cloning. However, research in this area is still ongoing, and more studies are needed to fully understand the long-term health effects of cloning on animals.