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Luden [163]
3 years ago
8

What is the probability of flipping a coin twice and getting two heads?

Biology
1 answer:
KATRIN_1 [288]3 years ago
7 0
C. 1/4
punnet square is used for probable outcome of a cross so a.
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Presentation of a rewarding stimulus serves as ______, while removal of an aversive stimulus serves as ______.
Advocard [28]

Since, the options are not given the question is incomplete. The complete question is as follows:

Presentation of a rewarding stimulus serves as ______, while removal of an aversive stimulus serves as ______.

a. ​negative punishment; positive punishment

b. ​reinforcement; punishment

c. ​positive reinforcement; negative reinforcement

d. ​negative reinforcement; positive reinforcement

e. ​positive punishment; negative punishment

Answer:  c. ​positive reinforcement; negative reinforcement

Explanation:

Both positive and negative reinforcement are the parts of conditioning. In positive reinforcement the subject is awarded for the particular sets of desired behavior but it is opposite for the negative reinforcement the subject is punished for undesired behavior.

In positive reinforcement favorable stimulus is chosen by the subject which made the subject to avail the reward whereas in the negative reinforcement , the aversive stimulus is intended to reduce the undesired behavior by punishment.  

8 0
4 years ago
How can scientists determine whether a star or asteroid is moving toward earth
sergey [27]

Using the Doppler shift effect

If the celestial body is in the blue shift, then its moving towards earth and if it's in the red-shift then it's moving away from earth.

Explanation:

Doppler shift effect is a phenomenon that occurs in waves due to relativity. When an object is relatively moving toward an observer, it tends to  ‘compress’ the waves into a higher frequency/ shorter wavelength.  Visible light will be observed in blue shift because blue light is of higher frequency than red. If the object is relatively moving away from the observer, it tends to ‘stretch’ the waves. Remember ALWAYS this is relative to the observer. hence giving them the perception of viewing the object in longer wavelength. The object is observed in red shift because red light it has a longer wavelength/lower frequency than blue light.

This phenomenon is not limited to light waves, but happens even in mechanical waves like sound. When a wailing  ambulance is approaching you, you hear it in high pitch. However, when it passes you and moves away from you, you hear it in low pitch.

Learn More:

For more on Doppler shift effect;

brainly.com/question/6787528

brainly.com/question/3841958

#LearnWithBrainly

4 0
3 years ago
What is the control center of the entire nervous system
ira [324]

Answer:

I think brain and spinal cord

Explanation:

All together, the brain and the spinal cord serve the nervous system's command station. ... The peripheral nervous system's main job is to send information gathered by the body's sensory receptors to the CNS as quickly as possible.

3 0
3 years ago
Which gastrointestinal (gi) change may be found in the client with burn injuries?
Elena L [17]

In case of severe burn injuries, a person experiences a sudden increase in the number of dangerous bacteria in the gastrointestinal tract approximately 32%. The increase in the dangerous bacteria increase the chance of developing gastrointestinal conditions like irritable bowel disease, and other non-related conditions like rheumatoid arthritis and diabetes.  

But in case of less severe burn injuries, the dangerous bacteria accounted for just 0.5% of the bacteria. An imbalance in the bacteria cause long term health consequences, in fact some of the complications could possibly even result in death of a person with severe burn injuries.


8 0
3 years ago
Which part of the CNS is made up of the midbrain, pons, and medulla oblongata ?
Anna007 [38]
Your brain stem would be your answer
8 0
3 years ago
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