Answer:
C
Explanation:
All of the other answers would lead to the oxygen not being stable.
Explanation:
<h3> Possesses a well-developed brain and a vertebral column with eyes at the front of its head, - Possesses a four chambered heart and lays eggs, - It is an aboral herbivore, with a row of spines running down its back to its tail. Classify organism ‘A’ into is corresponding Phylum, Class and Genus. State clearly the features .</h3>
Answer:
One possible cause of persistent sadness could be depression
Explanation: