Презентация на тему Abiotic and biotic factors

of the same or other species.

Abiotic Factors: the effect

of non-living items of the organism’s habitat.

3 abiotic factors?

of other living organism of the same or other

species.

Abiotic Factors: the effect of non-living items of the organism’s habitat.

Climatic Factors: the effect of the average weather conditions over time, e.g., temperature, rainfall, day length, humidity, wind, atmospheric pressure.

Edaphic Factors: the effect of soil conditions e.g. pH, aeration, porosity, water content, mineral nutrients, humus, soil type.

Aquatic Factors: e.g. wave action, tides, submergence time, exposure time, salinity, oxygen concentration, currents, sedimentation and light quality.

animal by another for food.

Examples: fox killing rabbits; ladybird

killing aphids.

Ecological Benefit of Predation

Maintains the prey species at a sustainable level.
Predation is a major factor in the evolution of the prey species.

Predator Adaptations, e.g., fox.

Reddish fur: camouflage to avoid detection by rabbits.
Long canine teeth: to kill the prey and tear flesh from it when feeding.
Great speed: to outrun the prey to capture it.

Prey Adaptations, e.g., rabbit.

Rests underground: predator avoidance.
Long ears: good hearing to detect the predator.
White tail: conspicuous warning signal to other rabbits.