Answer:
It helps in the packaging and distribution in cells.
Explanation:
Answer is a. he projections are trichocysts, released for the self-defense of the <em>Paramecium</em>.
When <em>Paramecium</em> is stimulated by chemicals such as picric acid or an injurious enemy, it responds by throwing out transparent spine-like projections called trichocysts. The discharge of trichocysts forms an effective barrier round the animal and protects it from acid or enemy.
Prescribed burns are referred to as ridding of the forest by burning the dead leaves, tree limbs, and preventing the destructive wildfire.
The prescribed burns can help in maintaining healthy ecosystems.
The prescribed burns can be explained as:
- The prescribed fire can reduce hazardous fuels, protect the human communities from wildfire.
- The prescribed burns minimize the spread of pest insects and any dangerous diseases.
- Prescribed burns improve the habitat for the endangered species, and remove the unwanted species that threaten the native species to ecosystems.
Thus, prescribed burns are useful to maintain a healthy ecosystem.
To know more about prescribed burns, refer to the following link:
brainly.com/question/6360948
