Answer:
The answer is a. absolute threshold.
Explanation:
The absolute threshold is described as the minimal perceptible level of a stimulus. In the example, the threshold is auditory.
A common way of measuring one's hearing absolute threshold is to gradually increase a sound frequence until the person starts perceiving the sound. However, the stimulus must be identified at least 50% of the time.
Most people's absolute thresholds decline with age.
The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California.
Answer:
improving access to public libraries
Explanation:
The answer is letter A. The Clear Air Act would be a reason for the Environmental Protection Agency or EPA to regulate car emissions. EPA sets the emission standards under the said rule or regulation and this also covers the green house gas emissions.
