What is a niche? * A. The habitat that an organism lives in
B. An organism's "role" in an ecosystem
C. A type of consumer
D. The relationship between a producer and consumer
What happens when different species try to occupy the same niche? *
A. The species compete with each other
B. The species cooperate with each other
C. The species coexist with each other
D. All of the above

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What’s the student’s scientific question

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.