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The Earth is essentially a closed system; it obtains lots of energy from the Sun but the exchange of matter with the outside is almost zero. Isolated systems can exchange neither energy nor matter with an outside system.
The Precambrian was originally defined as the era that predated the emergence of life in the Cambrian Period. It is now known, however, that life on Earth began by the early Archean and that fossilized organisms became more and more abundant throughout Precambrian time.
Answer:
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Answer:
Monosaccharides are the simplest carbohydrates. Although glucose and fructose have the same molecular formula they have different structures or the atoms are arranged differently from each other and this is evident in the way they react, behave and in their properties. hope this helps
Explanation:
Answer: Myocardial infraction can be defined as the condition which is caused due to absence of oxygen in major parts of the heart.
This also causes ischemia which occurs primarily and myocardial infraction occurs secondarily to this.
When, oxygen and nutrients from the blood reaches to the area which was deprived of oxygen results in inflammation and oxidative damage.
This is caused due to induction of oxidative stress rather than the normal functioning of the body.
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