Answer:
Petroleum gas is mainly C3 and C4 based (propane and butane), whilst natural gas is predominantly C1 and C2 (methane and ethane). Petroleum gas is generally produced via the cracking of naphtha, which is one of the components separated during crude oil refining.
Explanation:
4.6 billion years ago
The study pushes back the clock on the origin of Earth's water by hundreds of millions of years, to around 4.6 billion years ago, when all the worlds of the inner solar system were still forming. Scientists had suspected that our planet formed dry, with high-energy impacts creating a molten surface on the infant Earth.
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Answer:
three types of stimuli—mechanical, thermal, and chemical; some endings respond primarily to one type of stimulation, whereas other endings can detect all types. Chemical substances produced by the body that excite pain receptors include bradykinin, serotonin, and histamine.
Explanation:
There are not several examples of thermal equilibrium, but only one case: Equal temperature everywhere and constantly along time, with no heat transfer. ... Then, leave the time pass and any inner temperature gradient will disappear by inner heat transfer until temperature is uniform and constant.
<span>The answer in this question is bioconversion. It is because this is the process being used as a way of converting the organic matter into a source of energy in which is the microorganisms is responsible of because of their actions.</span>
