Biology

Ceil sap

Carbon dioxide

Oxygen

Water

Reduces the rate of transpiration

Protect them from scorching sun

Protect them from heavy winds

Resist bush fires

Number of organisms

Availability of nutrient supplied

Survival of the fittest

Enlargement of the territory

that nature selects those that will survive to reproduce their kind

there is a fierce competition among the offspring

that the weaker offspring are eliminated

food and other needs are abundant

Carbohydrates

Fats

Proteins

Vitamins