Answer: A) Layers 1 and 2.
Explanation:
Secondary succession refers to when species of plants and animals come back to recolonise an area that was destroyed by a natural disaster of some sort or human activity that change the makeup of the area but somehow left it still capable of supporting life.
As the species that come during secondary succession come after the land has been destroyed so to speak, they would be the later species to arrive which would mean that when they died they would be the closest to the surface when their body decays.
Secondary succession would therefore most likely be observed between layers 1 and 2.
<span>I think it would be A.) Anemia, reducing the delivery of oxygen to the brain </span>
<u>Answer</u>: freezing
Freezing is defined as the process through which a substance changes its from from a liquid to a solid. As the liquid lava in the example has lost its thermal energy and thus has hardened, the phase change through which it has undergone is freezing. All liquids with the exception of helium undergo freezing then the average energy of the molecules decreases.
Solidification is another term often used to describe this phenomenon. However, it is much more general and can occur due to other factors such as reactions between different chemicals.
The cell membrane<span> is semipermeable, meaning that only certain molecules and </span>substances<span> can pass through </span><span>the cell membrane.;
Hope this helps :))</span>
The HCG hormone is the answer possibly