What caused nikita khrushchev to refuse to attend the peace summit in paris in 1960?

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a.light in water b.light in vacuum c.sound in air. d. sound in water

Which area on the map would be most likely to have the most oil exploration in since the start of the 21st century? a) b) c) d) plz me

What volcanoes form on a divergent plate margin