Geckos are not at the top of the food chain. They are at the bottom.
Lack of suitable food !
They eat flies that are contaminated with harmful chemicals.
It was the gekoes that killed them because of the DDT
Geckos die from eating poisoned flies.
If you are at the top of the food chain, if you prey is poisoned or ill, you can die from illness.
If a component is left out of the food chain then something will not be able to eat it. Then it will die, and the component above it in the food chain will not be able to eat it, and will die. Basically, if a component is left out of the food chain, the food chain collapses.
Yes, they can. Geckos are very sensitive.
they die all the time
They die
We All Die
shut up die stupied
If the produce is removed then the food chain will cease to exist. The consumers will then have nothing to eat and so will die.