Answer:
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range compared with the nearby frequency. spectral lines are often more used to identify atoms and molecules.
Explanation:
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Person playing basketball because they are active
Dancing is a physical activity which strengthens the abdominal and calf muscles as well as improves flexibility.
<h3>What is a physical activity?</h3>
A physical activity is any activity which involves movement of the body in order to strengthen the muscles and to be physically fit.
Dancing is a physical activity which involves intricate and repeated movements of the body.
Dancing is beneficial because;
- it helps to relieve stress
- it improves flexibility
- it builds muscle endurance
Some muscles involved in dancing include;
- The abdominal muscles
- The quadriceps
- the glutes
Some risks in dancing include muscle injuries, dislocations and possibly fractures due to falls.
Therefore, a dancing routine strengthens the abdominal and calf muscles as well as improves flexibility.
Learn more about dancing at: brainly.com/question/19025917
Answer:
The rabbit prey population will decrease.
Explanation:
More predators are there to eat the prey
Answer:
∆t(f) = 49.755C
Explanation:
Freezing point is defined as the point in which a liquid changes from liquid to solid state. Therefore, to calculate the freezing point of aqueous solution of propanol
∆t = k × I × m
Where k is cryscopic constant =
I = vant Hoff factor = 2
M = molar concentration = 12.25m
∆t (f) = 1.9 × 12.25 × 2 = 49.755C
