Answer:
Its A.
Explanation:
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Answer:
They provide high-density urban areas with space for outdoor recreation.
Explanation:
I just took the quiz.
I need help what’s this. it’s about heart rate
Answer:
During exercise, your heart typically beats faster so that more blood gets out to your body. Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps.
What is one difference between natural selection and artificial selection?
a)Natural selection involves humans; artificial selection does not involve humans
b)Natural selection does not involve humans; artificial selection involves humans
c)Natural selection takes longer than artificial selection
d (Artificial selection only involves plants; Natural selection only involves animals
Answer:
B
Explanation:
Natural selection and selective breeding can cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. For this reason, selective breeding is sometimes called artificial selection.
Choose the answer that explains solar prominences
A. Sudden release of magnetic energy stored in the corona
B. Intense electromagnetic storms on the photosphere
C. Intense solar winds on the Sun’s surface
D. Storms of gas that form columns and shoot into space
Answer:
D - a solar prominence is a column of gas that stretches out from the sun's (or any other star's) surface
Answer:
B
Explanation:
It was right for me
How is an open system different from a closed system?
A. An open system does not follow the law of conservation of mass while a closed system does.
B. An open system is not balanced.
C. An open system allows matter to enter and leave during a chemical reaction, while a closed system does not.
D. Open systems will be scals prior to initiating the reaction.