#3: A should be your answer
When exercising, your body needs more oxygen.
Verticle erosion/downcutting deepens the channel
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Answer:
African Americans sold into slavery and taken to the southern US states.
The Australian Aborigines overrun by invading Brittish and adapting to white ways.
The 900 people who followed Jim Jones to Guyana and died.
Answer:
Fold mountains are formed when two plates run into each other or collide
Explanation: