can i have this answer quick please i have to got to bed and i have 3 more question left please help The first artificial satellite was launched by the Soviet Union in 1957. What was its name? Courtesy of NASA A. Galileo 1 B. Viking 1 C. Sputnik 1 D. Voyager 1

This effectively set off the space race between the US and the USSR. There wasn't much on the satellite itself other than a power supply, a radio transmitter, and various cooling equipment. The satellite was merely a proof of concept of sorts, and a means to show political dominance/fear to the opponent. Despite the limited payload, there were some scientific discoveries such as determining the density of the atmosphere at various altitudes.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.