They mimicked the flight of birds.
Potassium has 20 neutrons
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Answer:
Glass and lens making have improved, and electronic features for microscopes have become available
Explanation:
Answer:
It is formed when magma is trapped deep inside the Earth.
Explanation:
Intrusive or plutonic, igneous rock forms when magma is trapped deep inside the Earth.
medium grained rocks ( crystal 2mm to 5mm) coarse grained rocks with crystal over 5mm in size.