The correct answer is - natural gas.
The natural gas is a fossil fuel, meaning that it is derived from the decomposition of organic matter, and through time went under certain processes in the crust that made its current composition.
This fossil fuel is known to cause much less pollution than the other fossil fuels, especially when compared to the oil and the coal which are both very big polluters.
The natural gas is distributed to the homes and factories through pipelines.
The main pollution form the natural gas doesn't come from its direct usage, but instead form the leaking during its transportation and moving it from one container to another. It releases a lot of methane in those cases which ends up in the atmosphere and contributes to the Greenhouse effect, but that is only very small amount.
Answer:
Most precipitation that falls to Earth is water in the form of a liquid.
Explanation:
Answer:
Levees are ridges that surround and keep water in irrigated areas
Explanation:
Levees are ridges that help us keep the water out from where we don't want it to be. In this case, these ridges are there to surround and keep the water inside the irrigated areas so that the rice can have enough water to grow and later be harvested by us for many uses. They are very popular in Korea but not seen only there.
Choices???????????????????
Answer:
As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts. The outer shell of the star, which is still mostly hydrogen, starts to expand. As it expands, it cools and glows red. The star has now reached the red giant phase. It is red because it is cooler than it was in the main sequence star stage and it is a giant because the outer shell has expanded outward. In the core of the red giant, helium fuses into carbon. All stars evolve the same way up to the red giant phase. The amount of mass a star has determines which of the following life cycle paths it will take from there.
diagram of the life cycles of low and high-mass stars
The life cycle of a low mass star (left oval) and a high mass star (right oval).
the different evolutionary paths low-mass stars (like our Sun) and high-mass stars take after the red giant phase. For low-mass stars (left hand side), after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf.
Explanation:
