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d1i1m1o1n [39]
3 years ago
14

The heart is important for transporting oxygen to the muscles when we exercise. How does the heart rate change when we go from s

itting on a chair to running up the stairs?
A. The heart rate stops.
B. The heart rate gets slower.
C. The heart rate gets faster.
D. The heart rate stays the same.
Biology
1 answer:
Savatey [412]3 years ago
6 0

Answer: C. The heart rate gets faster.

Explanation:

its true also give brainliest

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An atom has an atomic number 17 and atomic mass number 35. How many neutrons are present in its nucleus?
Pie

Answer:

B. 18

Explanation:

An atom, which is the smallest indivisible particle of matter, further contains certain particles called SUB-ATOMIC PARTICLES namely: proton, neutron and electron. In a neutral/uncharged atom, the number of proton is equal to the number of electrons. The number of protons in an atom represent its ATOMIC NUMBER.

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Neutron no. = mass no. - proton no.

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plz mark me as brainliest if this helped :)

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