Answer: I believe the correct answer for this would be mutation. It has a change on DNA, but can not have ANY effect upon the phenotype.
its C
because a rain gauge is for rain, a buoy is to tract temperature change in water and the currents. a thermometer is for temps outside for for yourself. and a satellite can track anything around the world
Examples would be: global warming, acid rain, air pollution, urban sprawl, waste disposal, ozone layer depletion, water pollution, climate change and many more affect every human, animal, and nation on this planet.
It is C WATER
just searched it
