Answer:
The US surgeon general's 1964 report declared that smoking cigarettes was linked to cancer
The average global temperature of the Earth has increased by almost two degrees in the last century.
Explanation:
Answer:
volume = mass/density
Here, volume = 80g/1.59gcm-3 → 50.314 cm3
Explanation:
2 is the maximum number of electrons that can occupy an orbital labeled dyx
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Answer:
d) the signals must be changed to another form at ground stations to travel through space.
Explanation:
Spacecraft use transmitters to communicate with people on Earth. This are sent in the form of signals.