The most common isotope of phosphorous has a mass of 31 u. Use the atomic number (Z = 15) to determine the number of electrons.
A) 0.55
B) 62
C) 15
D) 46
E) 31

They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).

Green is technically every other color but green but the other wavelengths of the other colors get absorbed by the object and the wavelength of the color green gets reflected

Conservation efforts have been effective in "increasing the number of endangered species, reducing all the negative impacts of human activity, and preserving wildlife habitats".hope my answer has you : )