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
tester [92]
3 years ago
5

Describe the external environment when melatonin levels are highest in the body in the 24-hour cycle

Biology
1 answer:
stellarik [79]3 years ago
5 0

Answer:

Dark and quiet, around 2-4AM

Explanation:

Melatonin is induced by darkness (i.e. when the sun goes down) but the levels reach a peak in the middle of the sleep cycle around 2-4AM, then begin to gradually fall.

You might be interested in
What are the three types of lipids?
Andrei [34K]
<span>•Triglycerides.

</span><span>•Steroids.

•</span><span>Phospholipids</span>
8 0
4 years ago
Which one of the following types of microscope gives the highest amount of magnification? Light microscope Electron microscope S
soldi70 [24.7K]
The answer is electron microscope, the magnification can be so high that it can be very expensive, most schools doesnt have them, mostly found in universities or some laboratories. the ones we usually use in home or schools are light microscope
6 0
3 years ago
Imagine that you have separated the cells of different sponges and mixed them up in a lab. Describe the experiment and your pred
aleksandr82 [10.1K]

Answer:

2

Explanation:

Because if you add 1  to 8 you get 9 then subtract 9 by 7 then and your answer is 2

5 0
2 years ago
Read 2 more answers
Which of these rocks are formed by great pressure?
xeze [42]

Answer:

schist marble

Explanation:

6 0
3 years ago
10. What is the relationship between air temperature and precipitation? Why?
Agata [3.3K]

Answer:

When the temperature increases there is more evaporation. When there is more evaporation the humidity increases due to more water molecules in the air. More humidity means more precipitation.

Explanation:

4 0
3 years ago
Other questions:
  • During the light-dependent reaction of photosynthesis, light energy is converted into which form of energy?
    6·1 answer
  • 1. In pea plants, round seeds (R) are
    15·1 answer
  • Which of the following elements is required for growth and development and is in our DNA? *
    15·1 answer
  • In order for an Organism to develop specialized tissues the organism must be which of the following
    6·2 answers
  • In a certain plant, yellow fruit is dominant to white fruit. A heterozygous plant with yellow fruit is crossed with a plant with
    5·1 answer
  • During diffusion, molecules move
    11·2 answers
  • Many cacti, such as saguaros and barrel cacti, have large stems and no leaves. What function of leaves is taken on by the stems
    13·2 answers
  • A protein sample has been treated differently before being loaded onto the gel for SDS-PAGE. The first aliquot of the sample is
    11·2 answers
  • The axon terminal is where signals are ______ _______ other neurons.
    15·1 answer
  • Wich measures the mass of an object?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!