Answer:
heat came from the supernova that led to the formation of solar system
<span>Sound waves with frequency higher that 20,000 Hz are referred to as "Ultrasonic"
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Answer:
dart
Explanation:
dart and sun and water so that the plant be okay
I believe all of these would be known as specific phobias.
Answer:
Wear a helmet. Stay visible; use bike lights and/or wear bright clothes. Look and Signal; use hand signals to let drivers know where you're going, try to make eye contact with them and look before you go.
Explanation:
