7. Which statement is true? * A. Warm-ups are important for increasing flexibility
B. Warm-ups and cool-downs are equally important
C. Cool-downs are important to relax muscles used during exercise.
D. They are all true statements.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.