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Chemistry &zoology department 
Faculty of science 
Mansoura University 
Comparison between 
food webs & food 
chains 
Student : Mahmoud Mohamed Moustafa El-Sharkawy 
Dr : Abeir El โ€“ Saeed Abd Rabou
What is a Food Chain? 
A food chain shows how each living thing gets its food. It shows 
who is eating who . 
A food chain always starts with a green plant and ends with a 
producer. 
All plants are producers & animals are consumers. 
The food chain ends with a predator โ€“on the top of the food 
chain- . 
It also shows the transfer of energy through living organisms 
from the primary producers ending with consumers and 
predators . 
At each stage , more energy is lost as heat as the development 
of the organism gets more complex and need more energy to 
still alive. 
Example for a food chain : 
Grass is eaten by Grasshopper is eaten by Toad is eaten 
by Snake is eaten by Hawk
The hawk is the end peredator of the food chain . 
What is food web : 
It consists of more than food web . 
It shows the different paths the organism can get food with , 
in conflict to food chains that shows only one way . 
For example : 
A hawk might also eat a mouse, a squirrel, a frog or some other 
animal. The snake may eat a beetle, a caterpillar, or some other 
animal. And so on for all the other animals in the food chain. 
It is more complexed than food chain.

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Differences between food chains & food webs in ecosystem

  • 1. Chemistry &zoology department Faculty of science Mansoura University Comparison between food webs & food chains Student : Mahmoud Mohamed Moustafa El-Sharkawy Dr : Abeir El โ€“ Saeed Abd Rabou
  • 2. What is a Food Chain? A food chain shows how each living thing gets its food. It shows who is eating who . A food chain always starts with a green plant and ends with a producer. All plants are producers & animals are consumers. The food chain ends with a predator โ€“on the top of the food chain- . It also shows the transfer of energy through living organisms from the primary producers ending with consumers and predators . At each stage , more energy is lost as heat as the development of the organism gets more complex and need more energy to still alive. Example for a food chain : Grass is eaten by Grasshopper is eaten by Toad is eaten by Snake is eaten by Hawk
  • 3. The hawk is the end peredator of the food chain . What is food web : It consists of more than food web . It shows the different paths the organism can get food with , in conflict to food chains that shows only one way . For example : A hawk might also eat a mouse, a squirrel, a frog or some other animal. The snake may eat a beetle, a caterpillar, or some other animal. And so on for all the other animals in the food chain. It is more complexed than food chain.