16-7= 9 you subtract the atomic number from the mass and get the number of neutrons so there ae 7 protons and 9 neutrons
The basic number of chromosomes is designated by 2n and is also called somatic number. In normal human karyotype, the somatic number is 46, so 2n = 46. Human karyotype is also composed of 22 autosomes.
Areas near continents where freshwater rivers enter the ocean. The ocean IS salt water.
1. open ocean
2. inter tidal zone
3. coastal zone
I believe the answer is D
I hope this helps!
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