You asked: How do biotic and abiotic factors affect the size of a population over time?

How do biotic factors affect population?

Biotic factors refer to the living or once-living organisms in an ecosystem and their impacts such as predation, competition, food supply, human impacts and parasites. Environmental factors such as rainfall, climate, predators, shelter and food availability can change.

How do biotic and abiotic factors affect?

Biotic factors like insects, rodents, pests, and many more spread the disease and reduce crop production. Abiotic factors like humidity, temperature, moisture, wind, rain, flood, and many more destroy the crop raised.

What factors affect population size?

Population growth rate is affected by birth rates, death rates, immigration, and emigration. If a population is given unlimited amounts of food, moisture, and oxygen, and other environmental factors, it will show exponential growth.

How do biotic factors affect the population size and distribution of organisms?

Biotic factors

They can also influence the distribution of organisms in an ecosystem. grazing – too little leads to dominant plants outcompeting other species, too much reduces species numbers overall. Both decrease biodiversity. predation – a reduction in predators can lead to an increase in prey.

How do biotic and abiotic factors affect crops production?

Biotic factors like insects, rodents, pests, and many more spread the disease and reduce crop production. … Abiotic factors like humidity, temperature, moisture, wind, rain, flood and many more destroy the crop raise. Abiotic factors like hot, cold, drought, salinity, etc. affect crop production.

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How do biotic and abiotic factors affect storage of food grains?

The factors responsible for loss of grains during storage are: (i) Abiotic factors like moisture (present in foodgrains), humidity (of air) and temperature. (ii) Biotic factors like insects, rodents, birds, mites and bacteria.

How does limiting factors and biotic potential affect population growth?

Limiting factors include a low food supply and lack of space. Limiting factors can lower birth rates, increase death rates, or lead to emigration. … Competition for resources like food and space cause the growth rate to stop increasing, so the population levels off.

What determines the size of a population?

The four factors that determine population size are birth rate, death rate, emigration, and immigration.