<span>Although it is not mentioned the location, I found the exercise on the internet with the following options:
A)weathering and erosion of park pathways
B)deterioration of the man-made structures in the park
C)pattern and timing of leaf loss in the shade trees
D)exposure of rocks and minerals found in the soil
The only effect, out of this options, that would be studied by biologists is the "pattern and timing of leaf loss in the shade trees". This is the only effect related to life, which is the subject of biology - living organisms and their mechanisms. Leaf loss is a process undergone by many trees as colder seasons, or dry seasons in the case of trees in tropical forests, approach.</span>
Yes smaller particles are used for energy.
The Molar mass of 
is 194g
<u>Explanation:</u>
Molecular mass of Fe = 56g
Molecular mass of C = 12g
Molecular mass of H = 1g
Molecular mass of O = 16g
Therefore, Molecular mass of
= 
= 56 + 36 + 6 + 96g
= 194g
So the Molar mass of is 194g.
