C) in the very recent past or the very near further Example: Walk
Answer:
Hope this helps!
Explanation:
At this extreme altitude gas molecules are widely separated. Above 60 miles (100 km) from Earth's surface the chemical composition of air becomes strongly dependent on altitude and the atmosphere becomes enriched with lighter gases (atomic oxygen, helium and hydrogen).
Answer: the invention of machines to do the work of hand tools
Explanation:
