There is a species of starfish called the crown of thorns. this species is responsible for killing coral reefs around the world. if you want to find out how these species have become so abundant around the world, who would you call? an astronomer a geologist a meteorologist an oceanographer next question ask for turn it in

 oceanographer

An oceanographer is a special kind of scientist who studies various aspects of ocean such as marine ecology, chemistry of oceanic water, geology linked with ocean such as plate tectonics, earthquakes and volcanic eruptions, ocean water circulation and climatic influence of ocean on landmass. An oceanographer specialized in marine biology and ecology will study the interaction of marine animals and plants with each other and with the oceanic water.

Therefore, oceanographer is a scientist which can be called upon to study the interaction of species of starfish called as the crown of thorns with the coral reefs all around the world. The oceanographer can also find out the abundance of starfish species around the world.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.