You heart is a specialised muscle the pumps you blood around you body and your blood carries oxygen and nonrishment to all parts of your body and carries waste products to serevrial organs, notably your lungs and kidneys to eliminate. your heart is divded into two pumps witch works together
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.
Answer:
its easy just read it
Explanation:
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