Answer:
(a) 0.5km or 500m
(b) 100m
Step-by-step explanation:
(a) 1 hour = 60 minutes
60 minutes = 30km
5 minutes = 30 ÷ 60
= 0.5km = 500m
(b) 1 minute = 500m ÷ 5
= 100m
During<span> the </span>last ice age<span> (top) </span>sea level<span> was at least 120 m </span>lower than<span> it is </span><span>today surprisingly. </span>