Question

question 4 (1 point) a dog and a flea are an example of _, because fleas irritate the dogs skin and feed on its blood. certain bacteria live in the digestive tract of humans, and their relationship is an example of _ because the bacteria help humans to break down the food they eat. cattle egrets eat insects off the back of an elephant, which is an example of _ because the cattle egrets benefit without either harming or helping the elephants. word bank: parasitism herbivory carnivore predator - prey mutualism commensalism blank 1: blank 2: blank 3:

Explanation:

1. A dog and a flea: A flea lives on a dog, irritates its skin and feeds on its blood. This is a parasitic relationship where one organism (the flea - parasite) benefits at the expense of the other (the dog - host), so it's parasitism.
2. Cattle egrets and cattle: Cattle egrets eat insects off the back of cattle. The egrets benefit by getting food, and the cattle are neither helped nor harmed. This is commensalism.
3. Bacteria in human digestive tract: Bacteria help humans break down food. Humans provide a habitat and nutrients for the bacteria. Both organisms benefit, so it's mutualism.

Answer:

Blank 1: Parasitism
Blank 2: Commensalism
Blank 3: Mutualism