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

question 16

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. Fish that are not treated with chemical X are considered ____. ​

• A)the null hypothesis
• B)experimental data
• C)replicates
• D)controls
• E)experimental variables

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Definitions:

Lateral Collateral Ligament

A ligament located on the lateral (outer) side of the knee, providing stability to the outer knee joint.

Supraspinous Fossa

The depression above the spine of the scapula on the dorsal surface, which houses the supraspinatus muscle.

Acromion

An anatomical landmark located on the upper part of the shoulder blade, which extends laterally over the shoulder joint.

Coracoid Process

A small hook-like structure on the shoulder blade that serves as an attachment point for muscles and ligaments.