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
Oksanka [162]
3 years ago
8

What causes the different time zones?

Biology
1 answer:
Korvikt [17]3 years ago
5 0

Answer:

The need for continental time zones stemmed directly from the problems of moving passengers and freight over the thousands of miles of rail line that covered North America by the 1880s. Since human beings had first begun keeping track of time, they set their clocks to the local movement of the sun.

You might be interested in
Norepinephrine, serotonin, and dopamine are all examples of _______.A. bodily humors. B. synaptic clefts.
Hatshy [7]

The question is incomplete as it does not have the options which are:

A.bodily humors. B.synaptic clefts. C.neurotransmitters. D.growth hormones.

Answer:

The correct answer will be option- C

Explanation:

Neurotransmitters are the chemicals released from the neurons at the synaptic junctions which helps in the transmission of the electrical impulse from one neuron to another.

The dopamine, serotonin and nor-epinephrine are the biogenic forms of neurotransmitters which are synthesized from the precursors of the amino acids. These neurotransmitters are produced in producing different functions in the body.

Thus, option- C is the correct answer.

6 0
3 years ago
Which of the following phase changes would release energy as it occurs?
bezimeni [28]


B evaporation because the partacals r moveing

 

6 0
3 years ago
Read 2 more answers
Explain how beaches are created.
nikitadnepr [17]

Answer:

The waves erode seashells and rocks on the shore into small granuels called sand.

Explanation:

7 0
3 years ago
What type of eye protection is required in a lab? a. Lab-grade goggles all the time for anyone working with chemicals b. Lab-gra
Strike441 [17]
It depends on your teacher, it should be A. It could be B if that’s what your teacher wants but I would go with A.
8 0
1 year ago
Read 2 more answers
Which of the following is a function of body fat? a. It is an important component of teeth. b. It is a source of some hormones.
labwork [276]

Answer:

c

Explanation:

3 0
3 years ago
Other questions:
  • The motion permitted at a joint ranges from ____________ , such as where some skull bones interlock at a suture, to ____________
    14·1 answer
  • Which molecule shown above contains a functional group that is a part of the molecule known as the "energy currency of living or
    6·1 answer
  • How many bones are found in an adult human skeleton
    8·2 answers
  • When you walk across a carpet, you become negatively charged. Why do you receive a shock when you touch a metal door handle? Ele
    7·2 answers
  • The Ring of Fire is a string of volcanic sites in the Pacific Ocean that stretches between the Americas, Asia, and Australia. Wh
    11·1 answer
  • A friend comes to you extremely agitated and says her husband beat her last night.She says she doesn't know what to do.You Can S
    15·1 answer
  • Which of the following is FALSE regarding the DNA double helix?
    11·1 answer
  • Can someone help with this?
    14·2 answers
  • g The stationary phase in gas chromatography is best described as: is a column packed with solid particles that that come in con
    11·1 answer
  • Which of the following predictions about global climate change is directly related to an increase in the burning of fossil
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!