If all predators disappeared, the number of herbivores and smaller carnivores will increase in number.
Their populations increased.
Here is a simple but concise answer to your complex question. Ecosystems require carnivores for balance. Without carnivores, plants are are devastated by a surplus of herbivores, and thus cannot survive. This in turn threatens the herbivores with starvation, which is a much more painful death than being preyed upon by carnivores. Essentially, carnivores prevent plants from being wiped out by excessive herbivores, and save said herbivores from starving. By eating them. Sounds harsh, but the alternative is ecological collapse.
If herbivores were removed from the planet, the food chain wouldn't have a bottom. Some carnivores eat smaller carnivores, but the lowest carnivore on the food chain would die if herbivores would be removed, causing a chain reaction and, well, the carnivores that eat that carnivore would die, and the carnivores that eat THAT carnivore will die... etc. The world would be a total mess.
The key roles or niches that organisms fill in their habitat are producers, primary and secondary consumers (herbivores, carnivores and omnivores), predators, prey, scavengers and decomposers.
Level 1: Plants and algae make their own food and are called primary producers.Level 2: Herbivores eat plants and are called primary consumers.Level 3: Carnivores which eat herbivores are called secondary consumers.Level 4: Carnivores which eat other carnivores are called tertiary consumers.Level 5: which have no predators are at the top of the food chainLevel 6: Which is us because we are top top predator of every food chain
their populations increased
Their populations increased.
Lions (carnivores) are predators of zebras (herbivores).
Predators generally eat other living animals, which'd make them carnivores, meat eaters.
They are carnivores, consumers, and predators.
Eagles are carnivores, parrots are herbivores
tertiary
Omnivores are animals that are both herbivore and carnivore. For example, Humans are Omnivores, unless they are vagan or strictly vegetarian. Carnivores are predators. They hunt down other animals. Herbivores eat plants.
Moose are herbivores, they don't eat meat they eat plants. Bears , wolves and humans are the predators that eat moose.
Moose are herbivores, they don't eat meat they eat plants. Bears , wolves and humans are the predators that eat moose.
Herbivore animals mainly compose of preys (Goat, horse, cow, ect.) which are a bait to predators (snake, lion, eagle, ect.)
foxes, snakes, hawks, in other words, carnivores because muskrats are herbivores. I mean Omnivores, depends on the environment around them.