Https://wonderopolis.org/wonder/what-is-earths-core-made-of
This may help you on your en devours. This question truly doesn't make any sense to me... <span />
Biological mechanisms: Photosynthesis, digestion, cellular respiration.
Habitat for many species.
Participates in cycling of materials used by living things.
For energy resources, Poland's most important one is coal (and also lignite) which is mined in Upper Silesia in some large open pits mined there since the 19th century at least. It does have some petroleum in the Baltic Sea but still must import it from Russia.
Answer:
Flat-Earth theorists often have explanations for how a disk-shaped ... The problem is that a flat Earth flat out wouldn't work. ... However, if Earth, somehow, were truly flat, it would not behave ... And once you get rid of gravity, everything about our planet rapidly
Hope this helps because I was a little confused too!
<h2>Right answer: It is used to measure long distances in space</h2>
A light year (
) is a distance unit that is approximately 
.
By definition it is <em>the distance that a photon would travel in vacuum during a Julian year (365.25 days) at the speed of light (299 792 458 m/s) at an infinite distance from any gravitational field or field magnetic.
</em>
<em>
</em>
In other words:
It is the distance that light can travel in a year.
This unit is used to measure large distances in space. Therefore the correct answer is D.
