<span>I think its made of food oxidation.</span>
Functional and economically most important mineral in nutrition of layers
is calcium, primary because of egg production, i.e. forming of the egg shell.
The energy that the hawk has taken isn't enough for another animal to get any benefit therefore the pyramid has a limitation.
The phospholipid molecule is both hydrophilic and hydrophobic which allows it to organize into a bilayer with the hydrophobic tales tucked away and the hydrophilic head exterior. This bilayer is also semipermeable allowing some small molecules in for the cell to use
1.All living things are made up of one or more cells.
2.A cell is the most basic structure of organisms.
3.All living cells come from pre-existing cells.