Answer:
1. Aortic arch
2. Left subclavian artery
3. Left axillary artery
4. Left brachial artery
5. Left radial artery
Explanation:
The answer above is according to Quizlet
Answer:B.
It was used to prove that smoking causes health problems.
Explanation:
Answer:
A. is repeated many times to ensure that the results are accurate
Explanation:
A controlled experiment is repeated many times to ensure that the results are accurate
Answer:
The weather change as the earth warms because since,20th century due to human activities, particularly fossil-fuel burning which increases heat- trapping greenhouse gas levels in Earth's atmosphere.