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zysi [14]
3 years ago
15

Earth was able to remain an atmosphere because of _____ .

Biology
1 answer:
Dafna1 [17]3 years ago
6 0

Answer:

gravity

Explanation:

Moon has very low gravity.,.. That's all gases escape from moon.. And it has no atmosphere.

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How does pioneer organisms modify the environment
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Pioneer species/organisms help modify the environment because they are the first organism to live on that "terrain" or environment and they open up the chance to make more organism, also when they die and decompose they make more soil so that more organisms can grow.

Explanation:

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What kind of tissue can an ultrasound penetrate?
frutty [35]

Answer:

I think its bone, air and hence

Explanation:

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What is the average speed of the zebra during the time between 0s and 40s?
kompoz [17]

Answer: The average speed of the zebra during time between 0s and 40s is 34 seconds.

8 0
3 years ago
What are the all the types of energy and their meanings
Advocard [28]

Thermal -Thermal energy is created from the vibration of atoms and molecules within substances. The faster they move, the more energy they possess and the hotter they become. Thermal energy is also called heat energy.

Nuclear - Nuclear energy is stored in the nucleus of atoms. This energy is released when the nuclei are combined (fusion) or split apart (fission). Nuclear power plants split the nuclei of uranium atoms to produce electricity.

Elastic - Elastic energy is a form of potential energy which is stored in an elastic object - such as a coiled spring or a stretched elastic band. Elastic objects store elastic energy when a force causes them to be stretched or squashed.

Chemical - Chemical energy is stored in the bonds of atoms and molecules – it is the energy that holds these particles together. Stored chemical energy is found in food, biomass, petroleum, and natural gas.

Electrical - Chemical energy is stored in the bonds of atoms and molecules – it is the energy that holds these particles together. Stored chemical energy is found in food, biomass, petroleum, and natural gas.

Radiant - Also known as light energy or electromagnetic energy, radiant energy is a type of kinetic energy that travels in waves. Examples include the energy from the sun, x-rays and radio waves.

Light - Light energy is a form of electromagnetic radiation. Light consists of photons, which are produced when an object's atoms heat up. Light travels in waves and is the only form of energy visible to the human eye.

Motion - Motion energy – or mechanical energy – is the energy stored in objects; as objects move faster, more energy is stored. Examples of motion energy include wind, a flowing river, a moving car, or a person running.

Sound - Sound energy is the movement of energy through substances. It moves in waves and is produced when a force makes an object or substance vibrate. There is usually much less energy in sound than in other forms of energy.

Gravitational - Gravitational energy is a form of potential energy. It is energy associated with gravity or gravitational force – in other words, the energy held by an object when it is in a high position compared to a lower position.

4 0
3 years ago
Why do methane is a gas at room temperature and water is a liquid, even though both molecules are similar in size and mass?
emmainna [20.7K]

Answer:

Water can hydrogen bond.

Explanation:

Liquids become gases once they are heated to a certain temperature. Heat is a form of energy. This change occurs when the intermolecular forces between the liquid molecules are energized enough to break. This breakage is necessary because gaseous molecules exist individually and do not interact with one another. That being said, it takes more heat to boil water because its intermolecular forces are stronger than methanes.

Intermolecular forces (IMF) are a result of partial charges on the molecular atoms that cause temporary bonds to form between molecules.

Methane is a nonpolar molecule, meaning each atom can only have slight partial charges. The strongest IMF methane participates in are London Dispersion Forces.

Water, however, is a polar molecule, with the hydrogens having strong partial positive charges and the oxygens having strong partial negative charges. This allows water to participate in a very strong IMF called hydrogen bonding. Again, because these partial charges are so strong, the water molecules can form stronger IMFs.

<u>*When molecules have stronger IMFs, they require more energy(heat) to overcome them.*</u>

3 0
3 years ago
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