1-This theory, which orignated early in the 20th century, is often described as

Question

1-This theory, which orignated early in the 20th century, is often described as "rafts of rock floating on a sea of magma"

2-__________________________ diagrams assist demographers in looking at a one time snap shot of population distribution within a selected population

3-An ____________________ caused a mass extinction approximately 65 million years ago.

4-____________________ is a symbiotic relationship where both species mutually benefit from the interaction

5-__________________ attempted to regulate their population through implementation of the "one child" policy.

Explanation / Answer

1)The continental drift theory proposed by alfred wegener in 1910, he proposed beginning of the mesozoic era all the continents are united together form a single super continent called Pangea, the huge ocean surrounded called Panthalasa.In 1960 the theory of plate tectonics evolved from harry hess's concept of sea floor spreading, then identified the asthenosphre b seismic velocities it will tells the lithospheric rocks are floating on the asthenospheric magma

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