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Science

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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.

Subcategories

atomic number e.g. number of protons
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volume, typically in mL
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I'm assuming you mean when they're bonded to each other - oxygen is more electronegative, so it will have a partial negative charge, and hydrogen will have a partial positive charge.
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.....yes, clocks aren't organisms. did you mean clones? clones do have genetic material, it's just the same as the organism they were cloned from.
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Carbon, oxygen & hydrogen
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No.
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Qin Shi Huang build with his armies . He used gravel(mixture of stones and sands).
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Long bones of the skeleton.
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No.
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The four groups are Solid, Liquid, Gas, and plasma. However, scientists usually use other classification methods.
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The same substance can exist either as a solid, liquid or a gas and can change state depending on the temperature or external pressure.
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It doesn't. (its density does ... cause the molecules are closer together).
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None. The carotid arteries do.
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"displacement" or "distance"
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It's what we live on.
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A six-story building is usually about 60 feet tall.
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Yes. All turtles are reptiles.
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protons positive electrons negative neutrons neutral
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Metal.
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Yes.
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Neither-Photosynthesis is the process that a plant uses to make its food, which is glucose, that is made into energy. photosynthesis uses sunlight and carbon dioxide, and makes the products:glucose (C6H12O6 ) and oxygen.
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the water cycle-it changes forms for various reasons, when the sun heats water, it turns to water vapor which is a gas, and rises to the sky where it cools down into liquid particles, light enough to stay floated in the air, until its released as rain to the ground. with snow it can either be melted…
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Some are (geosynchronous are not).
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It circles the Earth south of the equator.
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Yes.
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I believe you mean Mars (under current exploration) ... but several satellites are known to have water too.
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It's not an element.
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Yes, it keeps them on the road.
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Plant can not use nitrogen "air" (gas), it must be "fixed" , a nitrous compound.
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1% of Mercury is water.
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Social sciences are studies of how people interact. Chemistry- like physics and biology- is part of the "hard" sciences.
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They all do, but O2 is the most significant.
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Actual collisions are pretty rare. Most 'space debris' burns up in the atmosphere long before it hits the planet.
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.002 (and all up to .009)
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- to avoid dangerous contamination of the environment - to make possible recycling thus making savings - to maintain the cleanliness of the country
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The atomic nucleus is the positively charged center of an atom and contains almost all of its mass. The nucleus of an eukaryotic cell is the organelle that contains and protects the linear chromosomes of the cell. The cometary nucleus is the solid part of a comet, composed of ices and dust. The nuc…
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Fibrous roots are thin, numerous and hair like.
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so when they need it they can pull it out again
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lungs
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The balance of oxygen and carbon dioxide is maintained in the atmosphere by the oxygen released by plant during photosynthesis and carbon dioxide released by human ,animal's etc in the atmosphere
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through active and passive transport
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Yes it is. Because in chemistry we have physics as a branch and so we have "physical chemistry" Science, in general though having different branches, is the supreme one. So each branch may have some relationship so essential some times. As we study about the cells there we need some basic knowledge …
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hot air is less denser than cooler air which allows it to float above cold air
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No. Only prokaryotic cells possess a nucleus.
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So you can tell them apart.
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"If the continents haven't moved, then this would suggest an ice sheet extended from the south pole to the equator at this time - which is unlikely as the UK at this time was also close to the equator and has extensive coal and limestone deposits." I got this off of The Geological Society.
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It denatures them.
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Doing the job correctly ! There's no point finishing the job quickly - if the equipment is not wired correctly.
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Because - increased pressure on one side of the weigh pan could give rise to false readings.
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Smoke - consists of microscopic particles, and gasses. Therefore it has mass, and occupies space.
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We need to breathe oxygen.
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The object you saw may also have been a meteor moving directly toward you or close enough to your line of sight that it appeared as a point rather than a streak.
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Electrons are negatively charged and so will be repelled by the negative end of the tube and attracted to the positive end.
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No, its colder.
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Depending on how tightly packed a rock's components and molecules are put together and what the composition of the rock itself is, the amount of time it takes for the rock to be effected by outside forces will vary.
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They all help form evaporation. This is good to know! :)
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Conservation of rotational momentum around the common center of mass. The gas/dust cloud that formed the solar system was rotating and that momentum is conserved in the orbits of the planets, comets, asteroids, etc.
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Actually a cloud is not even a living thing it is to be believed that it is dust that builds up water in it so yea i hope i could be of help
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Neurons.
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yes and no becuase it depends how you want to use it bar graph is better though
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The iodide ion (I-) has 53 protons (p+) and 54 electrons (e-).
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Its a force (acts at a distance).
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Friction (heat loss/entropy).
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Possibly but not likely.
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