bioluminescence

"The ocean separates the continents of Africa and South America. "

"the emission was mostly blood"

"The single-celled organism was studied by the biology students in their science class. "

"A magnet attracts iron filings."

"The children were excited to see the exotic creatures at the zoo. "

"My sister is often late for school. "

"We caught a firefly in a jar and watched it glow in the dark. "

"My grandmother is living a long and healthy life. "

"The room has a wooden floor."

"My sister's new job offers a similar salary; it's a good such for someone with her experience. "

"As you can see, this spacious dining-room gets a lot of light in the mornings."

"The chess club member achieved a brilliant mates, checkmating his opponent in the final round. "