Why would convergent continental plates form mountains?

Which biochemical cycle is relied upon for plant photosynthesis

As water is cooled from 4 c to 0 c its density

Which statement about portugal is not true? a. it granted independence to its last colony in 1975 b. it has avoided conflict with spain c. it was a leader in european world exploration in the 1400s d. its economy is changing from agricultural to industrial b. it has avoided conflict with spain