A room has dimensions of 20 feet by 15 feet with a 10-foot high ceiling. There are six 200-cubic-feet-per-minute (CFM) registers supplying air to the room. How many air changes per hour take place in this room?

Identify at least three types of characteristics that you were asked about as you the computer identify a fruit.

If the polar bear were taken out of the food chain what would happen to the seal population the seal population would diminish the seal population would grow dramatically the seal population would stay the same the seal population would decrease slightly

Which demographic challenge is europe currently experiencing? a. an aging and decreasing population b. a baby boomc. an unequal distribution between males and females d. a large group of teenagers moving through the school system(i chose a but i'm unsure)