What is at the end of the food chain?
A food chain is a linear network of links in a food web starting from producer organisms (such as grass or trees which use radiation from the Sun to make their food) and ending at an apex predator species (like grizzly bears or killer whales), detritivores (like earthworms or woodlice), or decomposer species (such as …
Why can’t a food chain start with a human being?
Food chains cannot start with human beings because we do not make our energy.
What are 3 examples of food chains that exist in nature?
Food Chains on Land
- Nectar (flowers) – butterflies – small birds – foxes.
- Dandelions – snail – frog – bird – fox.
- Dead plants – centipede – robin – raccoon.
- Decayed plants – worms – birds – eagles.
- Fruits – tapir – jaguar.
- Fruits – monkeys – monkey-eating eagle.
- Grass – antelope – tiger – vulture.
- Grass – cow – man – maggot.
What do the arrows in a food chain represent?
It shows how energy and nutrients are transferred from plants (producers) to herbivores and carnivores and through to decomposers. All food chains start with a producer. The arrows in the food chain below depict the direction in which energy and nutrients flow, i.e. the arrow always points from the eaten to the eater.
How does a food chain represent a full circle of life?
A food chain is simply the sequence of the different species that eat each other. However, food chains are actually a representation of how energy is passed through an ecosystem and so the arrows should always point from the organism being eaten towards the organism that is eating it.
What do the arrows tell us about?
A reaction arrow just tells you that a change has taken place, and one thing has turned into another. The arrow points from the old thing (the thing that reacted) to the new thing (the thing that formed). The reaction arrow is used in an “equation of reaction”. The thing that reacted is called the reactant.