Anitrogen atom has 7 protons, and the most common isotope of nitrogen has 7 neutrons. a radioactive isotope has 9 neutrons. what are the atomic numbers and mass numbers of the stable and radioactive forms of nitrogen?

Consider an organism that is eukaryotic, found in both unicellular and multicellular forms, may resemble a plant but is not photosynthetic, has chitin in its cell walls, and absorbs organic nutrients from decomposing material in the environment. this organism would be classified as which of the following types of organisms? a. fungib. protozoac. bacteriad. archaea

In the desert, saguaro cacti, owls, horned lizards, and fire ants all share the same space. which of the following can be considered a population? question 9 options: all plants in the same area all cacti in the same area all species in the same area the lizards and the ants

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above