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dsp73
3 years ago
13

If your heart is not strong enough or efficient enough, it is difficult to (3 points)

Physics
2 answers:
Lyrx [107]3 years ago
8 0

it's difficult to breathe.

Mariulka [41]3 years ago
5 0

-- climb 100 stairs 2 at a time

-- run a mile in less than a day

-- lift one end of your car without help

-- run for president

-- fall deeply in love

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