What is the first step of seafloor spreading?

A crack forms in oceanic crust.
Molten rock rises up through oceanic crust.
Molten rock solidifies at the center of the ridge.
New material pushes older rock away from the ridge.

20 brainliest for whoever answers correctly and answers all choose the statements that accurately describe china's "one child policy." china's "one child policy" began as soon as the communists came to power. the "one child policy" was meant to keep the population from reaching 700 million. the "one child policy" was meant to slow china's population growth. the "one child policy" began as a result of the country's war with japan. some people were allowed to have more than one child. the "one child policy" began in 1979. the "one child policy" was most enforced in urban areas. the "one child policy" ended at the start of 2016. china's population is current just under 1 billion people.

Russia is to the east if germany ? true or false

Which type of map gives the most information about what lies below the surface terrain ?