the autonomic (involuntary) nervous system controls the rate at which the heartbeats. sympathetic (fight or flight) signals speed up the heart’s rate while parasympathetic (rest and digest) signals slow it down. The part or parts of the heart that forms sympathetic and parasympathetic neurons form synapses is called cardiac plexus.
Cardiac plexus is a plexus of the nerves that are present at the base of the heart and is divided into superficial and deep part. The sympathetic and the parasympathetic nerves form synapses with heart in the form of cardiac plexus.
The sympathetic nerves are responsible for activating flight or fight mode while parasympathetic nerves are responsible for restoring the normal body state.
To learn more about sympathetic nerves here
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Answer:
Common examples of social issues: Poverty and Homelessness, Climate Change, Civil Rights and Racial Discrimination, etc.
Explanation:
There's so much more examples of social issues down the list, but that'll take to long, these are enough for now.
Answer:
a topic that interests you and you have read about it. The information should be used to derive possible answers to what you would like to research on. It can also be found in books from the library and online. Pick a topic that you’d like to know more about. Selecting an interesting topic helps you to generate hypothesis before the study. For example, choose a topic like, why is the percentage of obese women is larger than that of men? This is a topic that may raise a discussion, and the literature of this information will vary. The information in books written by different people will be different.
Explanation:
The water bends everyone's path into a normal line drawn perpendicular to the shoreline, as the people still on the shore are bent farther away from the shoreline than those in the water.
The same thing happens to a ray of light as it moves from air to water, or from a fast medium to a slow
one: it bends toward the normal.
Light does just that when moving between media. It takes the path that takes the least amount of time when you consider the difference in speed between the media.
For example, imagine you are looking out the window. You have air, glass, and then air again. Glass is denser than air, so light from the outside travels from a fast medium, through a slow medium, and back into a fast medium. The light takes its way from the outside to your eye, which spends the least time
learn more about refraction below
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Answer: hypothesis, prediction, design experiment, carry out experiment, etc
Explanation:If the question is supposed to be, is there a connection between atmospheric oxygen level and photosynthesis, then the next step would be to frame the hypothesis, which could be, for example,
“photosynthesis requires oxygen”, and a prediction such as,,
in a closed system, photosynthesis will reduce the oxygen level, or even photosynthesis does not proceed without oxygen.
and a format to test the hypothesis (design an experiment)
perform the experiment
collect data
analyse data
(of course, in this case, the data will support the null hypothesis).
