Answer:
Protists
Explanation:
Animal like protists which we called protozoans are eukaryotic, unicellular, heterotrophic organisms without cell wall found in aquatic environment.
"D. Core
The core of the Sun is where energy is produced when Hydrogen atoms are converted into molecules of Helium. The extreme pressure and temperature within the core make this conversion possible. This conversion is known as fusion. Within the Sun's core, fusion produces the most appreciable amount of heat energy."
It relases Energy.
Glucose + oxygen ---relases energy---> carbon dioxide + water
