Answer:
At convergent plate boundaries, oceanic crust is forced down into the mantle where it begins to melt. Magma rises in and out the other plate and solidifies into granitewhich is the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed.
Producers at the bottom, herbivores 3rd, omnivores 2nd, and carnivores 1st. And decomposers are outside which make them detritivores. Let me know if this helps.
Nucleic acids are made up of nitrogen bases, sugars, and phosphates.