Use osmosis to explain why amoeba needs a vacuole

Amoeba is just1 cell and usually life organizations with 1 cell are not have a routine life and as u know vacuel is for saving water when a amoeba is in lake some times it need more water.

The common brushtail possum was introduced to New Zealand in 1837 to establish a fur industry, but in the mild subtropical climate of New Zealand, and with few to no natural predators, it thrived to the extent that it became a major agricultural and conservation pest.