Abiotic factors are any non-living factors that affect an organism or shape its environment. These include:
Changes in abiotic factors can affect the number of organisms in a population and the rate of growth.
The rate of photosynthesis is affected by the temperature. This is because the enzymes involved are able to work faster. As a result, there is an increase in the rate of plant growth.
An increase in temperature also means that animals are able to spend less energy trying to keep warm.
Animals and plants both need a sufficient amount of water to survive.
Plants need light for photosynthesis and the rate of photosynthesis affects the rate of plant growth.
In areas of slow plant growth, there will be fewer plants for organisms to eat.
The pH of soil affects the rate of decay. Therefore, it affects how fast mineral ions return to soil (which are then taken up by other plants).
Different species of plants thrive in different nutrient concentration levels.
The wind affects the rate of transpiration that occurs in plants.
Transpiration affects the rate of photosynthesis as it is involved in the transportation of water and mineral ions from the roots to the leaves.
The carbon dioxide levels affect the rate of photosynthesis in plants.
Oxygen levels in water are usually relatively lower compared to the oxygen levels in the air. Aquatic animals have adapted to survive in water. However, some can only survive in water with high concentrations of oxygen.