Life would not be possible on earth without the water that covers much of its surface and the air that surrounds it, earth water and air affects each other in many ways
which of the following situations represent an interaction between the atmosphere and the hydrosphere

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it