the answer is bioshere
Answer:
A biosphere
Explanation:
Biosphere refers to the zone of life on a planet. It includes all living elements of a planet. It is also known as Eco-sphere and includes the interaction of all living being with their surrounding.
Of all the planets and exo-planets, Earth is the planet known to have life and thus biosphere.
Whereas atmosphere, lithosphere and cryosphere can be found on other planets as well.
Atmosphere: Layer of air and gases surrounding a planet or any celestial object. (Except Mercury, all the planets of solar system have atmosphere)
Lithosphere: it refers to the rigid outer part of the planet which includes crust and mantle. (All the rocky planets have lithosphere)
Cryosphere: portion of the planets where water is in ice form. (Many exoplanets have been discovered having cryosphere)
-they are lubricants
-they increase friction
-the reduce static electricity
Answer:
30 m³
Explanation:
Parameters given:
Initial volume of helium, V1 = 5 m³
Initial pressure in balloon, P1 = 30 kPa
Final pressure, P2 = 5 kPa
To find the volume of the balloon at that volume, we apply Boyle's law.
It states that at constant temperature, the pressure of a gas is inversely proportional to the volume of the gas.
Mathematically:
P = k / V
Where k = constant of proportionality
This implies that:
P * V = k
This means that if the pressure or volume of the gas changes at the same temperature, the product of the pressure and volume would be the same:
Hence:
P1 * V1 = P2 * V2
Hence, to find the final volume:
30 * 5 = 5 * V2
=> V2 = (30 * 5) / 5
V2 = 30 m³
The volume of the gas when the pressure is 5 kPa is 30 m³.
False. A negative energy balance happens when you eat fewer calories than needed and expend more energy, leading to weight loss. A positive energy balance happens when you eat more calories than needed and expend less energy, leading to weight gain.
False. Energy balance refers to the relationship between the energy you take in from foods and the energy you expend in daily activities. Negative energy balance occurs when the energy you expend is more than the energy you take in (fewer calories eaten than needed), leading to weight loss. Conversely, a positive energy balance happens when you consume more energy than you expend (more calories eaten than needed), resulting in weight gain.
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B. compounds
C. Molecules
D. atoms
Molecules collide and create a movement of heat called conduction.
Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold.
In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules while in liquids and gases it is due to the random motion of the molecules ,
When conduction takes place, heat is usually transferred from one molecule to another as they are in direct contact with each other.There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:
1) heat conduction
2) electrical conduction
3)sound conduction
Learn more about conduction,here:
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Answer:
c.
Explanation: