Your answer is Breaking chemical bonds. Hope this helps
Answer:
Single-celled organisms use cell division as their method of reproduction. Cell Division and Growth: A sea urchin begins life as a single cell that (a) divides to form two cells, visible by scanning electron microscopy.
Explanation:
Los organismos unicelulares utilizan la división celular como método de reproducción. División y crecimiento celular: un erizo de mar comienza su vida como una sola célula que (a) se divide para formar dos células, visibles mediante microscopía electrónica de barrido.
Helium was first discovered in space before it was on earth
Answer:
can be used in fireworks, flares and sparklers
Explanation:
as it burns in air it ignites with bright light
