They’re known as gateway drugs.
This is false because rivers and oceans are two different things
<span>The endosymbiotic theory deals with the origins of mitochondria and chloroplasts, two eukaryotic organelles that have bacteria characteristics. Mitochondria and chloroplasts are believed to have developed from symbiotic bacteria, specifically alpha-proteobacteria and cyanobacteria, respectively.</span>
Oxygen and glucose are the two things needed for cellular respiration.
