Answer:
Option B is Correct
Explanation:
B. The natural channel had a lower gradient and higher friction than the straight channel.
Answer:
If a spacecraft is in space for a long time, radiation is a problem. Designers must figure out a way to protect astronauts from the radiation.
Answer:
Bushfires in Australia are a widespread and regular occurrence that have contributed significantly to moulding the nature of the continent over millions of years.
Answer:
it helps not only the local economy but the global economy
Explanation:
