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Elena-2011 [213]
3 years ago
6

Which of the following is a source of pollution in the environment? A. smoke from factories B. fumes from cars C. acid rain D. a

ll of these
Biology
2 answers:
ra1l [238]3 years ago
7 0
I would think it is D.
mixas84 [53]3 years ago
4 0
B for sure A maybe So I would pick either B or D
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2 years ago
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In human blood, there is a compound inside the RBCs called haemoglobin which ensures that the muscle will receive enough oxygen during exercise.

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