Answer:
If it's triangles on one side it's a cold front
If it's a red line with semi circles then it's a warm front.
The satellite that orbit earth without gravity would collide into earth since there is no gravity to hold it up there in space.
Answer:
Mass number
Explanation:
Isotopes have the same number of protons and electrons but different no. Of neutrons. As mass number = protons +neutrons.
Mass number should differ.
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Sonar testing has caused whales to die in mass amounts.
Organs combine to form C. an organ system
hope this helps
