Scientists Want to Determine Whether Chemical X, a Component of Fertilizer

question 55

Multiple Choice

Scientists want to determine whether chemical X, a component of fertilizer, is harmful to fish.  They treat fish in the laboratory with increasing amounts of the chemical for one week and then measure their viability. When researchers designed this experiment, they wrote "If chemical X is toxic, the fish will begin to look sick and die." This statement is a(n) ____. ​

• A)hypothesis
• B)interpretation
• C)prediction
• D)result
• E)theory

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Definitions:

Subcutaneous Layer

The layer of tissue directly under the skin, composed of fat and connective tissues, providing insulation and cushioning to the body.

Dermis

The thick layer of living tissue below the epidermis in mammalian skin, containing hair follicles, sweat glands, and other structures.

Structural Strength

Refers to the ability of a material or structure to withstand loads that are applied to it without breaking or deforming.

Carotene

A type of pigment found in plants that contributes to the orange, yellow, and red colors of many fruits and vegetables; it is a precursor of vitamin A in the human diet.