Two Samples of Fish Are Taken from a River Upstream

question 15

Multiple Choice

Two samples of fish are taken from a river upstream and downstream of a factory to measure the effect of pollution from the factory on the fish.

• A) Observational
• B) Experimental

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Definitions:

Primary Dentition

Refers to the first set of teeth in the growth development of humans and many animals, also known as baby or milk teeth.

Primary Dentition

The first set of teeth in the human dentition cycle, also known as baby or milk teeth, typically includes 20 teeth.

Sphincter Control

The ability to regulate the muscles that close and open passages in the body, crucial for bowel and bladder management.

Anterior Fontanel

The soft spot on the top of a baby's head where the skull bones have not yet fused together, allowing for brain growth.