Ozone is a gas that occurs both in the Earth's upper atmosphere and at ground level. Ozone can be good or bad for your health and the environment, depending on its location in the atmosphere. Ozone occurs in two layers of the atmosphere. The layer closest to the Earth's surface is the troposphere.
Description & Range: The chimney swift is a small bird with a slender body and very long, narrow, curved wings. They have small round heads, short necks, and short, tapered bill. They can grow to sizes of 5.9 inches in length with an 11.8 inch wingspan and can weigh up to 1.1 ounces. Chimney Swifts are dark-gray brown all over with lighter plumage on their neck.
No. The Common Swift is one of the fastest-flying birds found in Europe. When members of a colony get together and fly screaming at full speed over their territory, they can reach 220 km/h in dives. Only the Alpine Swift (Apus melba), which can dive at 250 km/h, and the Hobby (Falco subbuteo), are faster than the Common Swift.