What are National Marine Sanctuaries? Briefly describe them and why we need more than just these sanctuaries.

a federally designated area within United States waters that protects areas of the marine environment with special conservation

Explanation:

to protect its natural and cultural features while allowing people to use and enjoy the ocean a sustainable way. Sanctuary waters provide a secure habitat for species close to extinction and protect historically significant shipwrecks and artifacts

The sanctuaries help protect the marine ecosystem and wildlife in that area. It protects areas from fishing and pollution. They help keep the marine ecosystems alive and thriving.

*WARNING* Do not copy word for word or you'll be plagarising!

Explanation:

Santuaries are areas that governments help protect from hurtful human activity.

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

a symbiotic relationship with the mitochondria