Answer:
The effort put by scientist and sailors about earth is that they keep on going round the earth and putting their lives in danger and some even give their lives.
Explanation:
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TRUE :) I hope this is helpful!
The Cambrian Explosion is when diverse animals were first recorded as fossils.
Answer:
<em>The velocity can change by changing the direction</em>
Explanation:
If the direction changes, then the velocity changes even though the speed is constant. Hope this helps!