Your skin has 3 layers. The top layer is called the epidermis. The middle layer is called the dermis. The bottom layer is called the subcutaneous fat.
The answer is B because:
Cell walls are made of cellulose and proteins (hence II).
Animal cells don't have cell walls (only cell membrane) but plant cells do so IV
They must be semipermeable since materials for example carbon dioxide and water for photosynthesis have to go into the cell <em>some</em> way.
I believe it’s because of San Andreas fault line if that helps
<span>John can use Cladistic
Analysis as an approach to trace the classifications of the lion and cat
because he can trace a common ancestor for them due to the cat and the lion
having the same characteristics and traits. They are considered to be closely
related because they share a common ancestor which means that they are closely
connected. The earliest discovery of using this method was by Peter Chalmers
Mitchell in 1901 as he was studying how different types of birds belong to the
same ancestry.</span>
2 - Human refuse to stop polluting.
All other three are attempting to attack the problem of pollution.
