Skin cells are made of proteins, water, and fat. But brain cells are only made up of amino acids, which ca make protein.<span />
I love art so you should get some holograghic paper for the title and for the system get clay or some sponge so the organs can pop out off the board and on the sides of the board put like the organ puffed up on the sides and the definito=ions or whatever under them.
Answer:
The correct answer is - a density independent factor.
Explanation:
Any external cause or change that leads to the change in the size of a population regardless of the density of the particular population known as a density independent factor in ecology.
Density independent factors are the factors that are not affected by the size of the population size of the species such as weather, climate and natural disasters.
Thus, the correct answer is - a density independent factor.