Chemical composition is always a property of an ore.
Because an organism with a genetic variation may have better chances of breeding and passing on that trait if the trait is beneficial to the survival of that organism. This leads to that trait being passed on and becoming wide-spread over generations of reproduction; natural selection.
Answer:
are made of mostly helium and hydrogen
Explanation:
The mechanical layer lies above the core is the mantle. It is the layer that is found after the core and it is the second layer of the Earth . It is about 84% of the Earth’s volume.
<span>Adenine bonds with Thyamine
Guanine bonds with Cytosine
and vice-versa</span>
