Please answer by filling in boxes, the triangle represents “d”

What are some possible short and long term medical concerns for crew members on longer space exploration trips

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?