1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
butalik [34]
3 years ago
15

The average threshold for human hearing is the tick of a watch from ______ under very quiet conditions.

Biology
1 answer:
Serggg [28]3 years ago
4 0
I believe the answer is 20 feet. According to McBurney and Collings, the average threshold of human hearing is the tick of a watch from 20 feet in very quiet condition.
The human hearing range is a description of the pitches and loudness levels a person can hear before feeling discomfort. There is a variety of sounds in our environment, ranging from faint sounds like birdsong and rustling leaves to louder sounds like music, yelling, and industrial noise.
You might be interested in
What structures of an electron microscope are comparable to the following requirements for the light microscope: (a) light waves
Delicious77 [7]
C) The viewer's eye
I had biology last year and i passed it with a A+ and i know everything about microscopes and such.
3 0
3 years ago
Read 2 more answers
Which is an example of a fractional scale?
oee [108]

Answer:

Fractional or Ratio Scale: Afractional scale map shows the fraction of an object or land feature on the map. This type uses a set of numbers that represents the object or a landmark. As an example on the left photo, the orange-shadedscale represents a 2/3 fractional scale. 2.

6 0
3 years ago
Which fraction represents 25% of the offspring in a genetic cross?
Hatshy [7]

Answer:

It is a quarter or one - of fourth

5 0
3 years ago
What does biologist use to join two DNA from molecules together
salantis [7]
Biologists use plasmids to join two DNA molecules together.
3 0
4 years ago
When you decrease the pH in the simulation, the ocean’s acidity increases. What do you expect to happen over time to the populat
kherson [118]

Answer:

With decrease in pH of ocean water, the survival rate of corals, algae, and fish in coral reef reduces.

Explanation:

Coral reefs find difficulty in living in acidic ocean water. It is so because the coral’s shell that is made up of calcium carbonate is unable to sustain in acidic environment.  

Not only this the skeleton of snails, clams, algae , fish etc is also made up of calcium carbonate. Increased acidity leads to death of these species.  

Thus, the lower is the pH of ocean water, the higher is its acidity and hence the lower is the probability of survival of corals, algae, and fish in the coral reef

8 0
4 years ago
Other questions:
  • Which of the following is an example of qualitative observation? Joseph is observing the color difference in the reaction mixtur
    13·1 answer
  • Matt is an athlete, but recently he's been feeling sluggish during practice. He needs to take more breaks because he feels tired
    5·2 answers
  • What is the term for an abnormally low concentration of potassium in the blood?
    5·1 answer
  • Bariatric surgery is performed to treat morbid obesity by restricting the amount of food that can enter the stomach and be diges
    10·1 answer
  • Water molecules are positively charged on one end and negatively charged on the other. what does this property allow water to do
    7·1 answer
  • Which is not a source of genetic variation?
    15·1 answer
  • When you heat a pot on a stove, the handle gets warm. Which type of heat transfer is responsible?
    14·1 answer
  • Which of the following is not a function of the liver?
    5·1 answer
  • Stem cells are -
    8·2 answers
  • While all zebras have stripes no two zebras share the same stripe patteren
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!