Were is the rest of the question...I mean were is the so called column
UV radiation generates ground-level ozone (O3) and some particulate matter (PM, frequently called aerosol) that include nitrate, sulfate, and organic aerosols causing adverse effect on human health and the environment. UV promotes the formation of hydroxyl radicals that act as cleaning agents for troposphere
Radiation has been around us throughout our evolution. So our bodies are designed to deal with the low levels we're exposed to every day. But too much radiation can damage tissues by changing cell structure and damaging DNA. This can cause serious health problems, including cancer
Answer:
D.
equal recognition in the international community
The Erie Canal flows through New York.
Answer:
Downtown, Dubai
Executive Towers
To: Sam
Date: 15 June 2019
Subject- Exciting Summer Vacations.
Dear Sam
How are you my dear friend? I am fine here and hope the same for you. My summer vacations has just finished and I want to tell you how I enjoyed with my family in the hill station of Shimla. The weather was very pleasant there. We had to wear woolen clothes in the morning and evening. We went to the local bazar there and bought some wooden clothes. We went to the famous Mall Road.....I did a lot of shopping there and bought a lot of things...We had great fun there.
(You can add 2 more paras on more info about what u did in the trip and what you saw there etc...I could only think of these many details....Pls add more as per convenience)
Give my regards to your parents. Hoping to meet you next month.
Yours Lovingly,
Aditya