a nitrogen 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?

How do animals obtain the nitrogen they use to make proteins and nucleic acids? a. by consuming plants or other animals b. by absorbing ammonia from bacteria growing in the roots of plants c. by breathing the nitrogen present in the atmosphere d.

What are disadvantages for sexual reproduction

Antarctica traps 70% of the world's fresh water in its ice. Which type of ice contains this freshwater?

How will the movement of water across the cell membrane affect the size of a cell if it is moved from an 80% sucrose solution to a 40% sucrose solution

Can you explain the function of teratogen such as thalidomide and alcohol in terms of environment factors that play a role in organisms development?

What are the three main components of biodiversity? a. Species diversity, species productivity, and species stability b. Genetic diversity, species abundance, and species evenness c. Species richness, species abundance, and species evenness d.

How can droughts lead to poverty and conflicts? Explain.

What would happen if you kept accelerating?

What are the symptoms of mumps

What is the difference between a specific and a nonspecific defense?