If the bison disappear from the ecosystem, the elk might become more plentiful because they don't have to compete with the bison for food. This could lead to too many elk eating all the plants, which could make some plants disappear. And if there are fewer elk the wolves might not have enough to eat. That shows how all the animals and plants in an ecosystem are connected. Having a variety of different species helps the ecosystem stay strong and bounce back from changes. MAKE THIS SOUND LIKE A 7TH GRADER

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If the bison disappear, it could cause the elk population to grow too much because they wouldn't have to compete for food. This might lead to a shortage of plants as the elk eat them all up. Without enough plants, some species could disappear. And if there are fewer elk, the wolves might not have enough food to eat. This shows how every animal and plant in an ecosystem is linked together. It's important to have a variety of different species to keep the ecosystem healthy and able to handle changes. So, basically, it's like a big, interconnected puzzle where each piece plays a part in keeping everything in balance.
make it shorter but sound like a 7th grader
If the bison go away, the elk could take over and eat too many plants. That might make some plants disappear. And if there are less elk, the wolves might not have enough to eat. It shows how all the animals and plants in an ecosystem depend on each other. Having different species helps keep the ecosystem strong and able to bounce back from changes.