When plates push forward it creates a ridge in the center. This ridge then creates a force that pushes older colder plates back down. Which allows hotter plates to be pushed back up creating the ridge again. This continues on and on which is why it’s seen as earths “conveyor belt”
Answer:
Plants require 17 essential elements for growth: carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K), sulfur (S), cal- cium (Ca), magnesium (Mg), boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), and zinc (Zn).