There are 3 Oxygen atoms bonded to 1 Nitrogen atom.
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-Payshence
<span>There are three types of seismic waves. These are classified on the basis of their penetration in the earth's surface and their arrival to seismographs. First are primary waves, which arrive first and penetrate the deepest. Then are the secondary waves, which penetrate less and arrive after primary waves. Finally are the surface waves, which do not penetrate the earth's surface and arrive the latest.</span>
B because the periodic table tells you the groups of the elements
Answer:
Ostia are tiny pores present all over the body of sponges. its function is to let the water, along with desire nutrient flows interior of the sponges.
