Biology: Keystone Species
For Kids and Teachers
Biology: What is a Keystone Species
What is a keystone species? A keystone species is one species that is unusually important in a habitat. It is a species that has a great effect on the other species around them if their numbers either decrease or increase dramatically the ecology of the area changes dramatically.
How can a dramatic decrease in vegetation lead to a decrease in prey species? A dramatic decrease in vegetation can lead to an increase in prey species because without vegetation there is nothing for the bugs to eat. The bugs have nothing to eat and the birds have nothing to eat because they eat bugs. Rats and mice also eat the vegetation and without vegetation they would die off as well. Predators like werewolves eat birds and mice and rats and because their numbers have greatly decreased the number of wolves would also decrease. Because everything in the wild eats everything else through the circle of life if the bottom of the food cycle, or vegetation, dies off it will affect every creature that feeds on the one before it.
What is the symbiosis? What are three main types of symbiosis? Symbiosis is a relationship where two organisms live closely together the three types of sin by doses include parasitism, mutualism and commonscalism.
Bacteria in a cows stomach helps the cow break down cellulose in grass, gaining nutrients in the process is this an example of communalism or mutualism? The bacteria and cows stomach is perfectly normal and helps the cow break down cellulose and grass is a good example of mutualism because the bacteria needs the cows stomach contents an account needs the grass to be broken down.