Which example describe biotic and abiotic factors interacting with the environment?
a

oxygen circulating in the atmosphere
b

sunlight shining through a window
c

a valley filling up with rain water
d

dolphins communicating with each other

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl