Answer: the proper number of chromosomes.
Explanation:
The tectonic plates move and shift due to Mantle convection
Mantle convection is caused by the magma in the mantle of the earth constantly being cooled near the crust and heated the closer it gets to the core and like normal convection the cool magma sinks towards the crust and the hot magma rises to the crust. this happens in a circular motion causing the crust to shift with the magma
<span>Complete Protein contain all nine essential amino acids. The nine essential amino acids is Tryptophan,Threonine, Isoleucine,Leucine,Lysine,Methionine+Cystine,Phenylalanine+Tyrosine,Valine and Histidine.</span>
I think the answer is photosynthesis 2