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Geckos are not at the top of the food chain. They are at the bottom.
because then the food chain is not going to be balanced then they will be extinct
The hawk, depending on where it Is in the food chain, will decrease the amount of animals below it i.e. rabbits, squirrels, ect. and/or it will be over populating the animal above it on the food chain therefore making the food chain and way of life not balanced.
Lack of suitable food !
Sharks eat animals and get eaten by other animals.
in the food chain is unbalanced then the animal's population or plant's population numbers would decrease. Then either die off of extinction or the numbers would increase once again.
A balanced food web must have a producer, such as a plant, to provide free energy from the sun. It also should have herbivores (to eat the plants and pass on its energy), and usually has carnivores and an apex predator (carnivore on top of the food chain)
It causes damage on the other parts of the food chain that were connected to it. It may lead to bad increase or decrease in population of the connected parts
niamh culleton is your balanced food
It is a food chain.
It causes deformities and infertility in fish or animals that live in the water.
It was the gekoes that killed them because of the DDT