The average distance is 16,000 km
Converging rate is 10 cm/year
1 km = 100,000 cm
= 16,000 × 100,000/10 cm/year
= 160,000,000 years
It will then take 160 Million years to collide.
Aerobic respiration to lactic acid fermentation, lactic acid is the reason your muscles get sore after a workout
Hope this helps.
I believe that the answer to this question is, that laws can be made to prevent certain things/ amounts of things to be used up.
It means they may or may not have the same function but have similar structure depicting that the organisms may have had a common ancestor.