Answer:
The correct option is<u> slight increase in salt concentration in the
</u>
<u>environment.</u>
Explanation:
The main function of contractile vacuole in the body of a paramecium is to pump out excess water. But an increase in salt concentration in the environment will let the water move inside the cell by osmosis. Hence, the contractile vacuole will not perform its function and will not be able to regulate osmoregulation.
Other options are incorrect because slight changes in the temperature or pH won't affect the contractile vacuole and it will still be able to perform its function.
They reduce the amount of leakage through small seep holes that sometimes form in the geomembrane part of the liner, this helps prevent plants & animals being harmed by the waste created by contaminated water.
The snakes nutrition is carnivores based. The frogs nutrition is also carnivores based (feeds on other animals), but in this situation the snake is the predator and the frog is the prey