Scientists think that algae first evolved approximately 2.7 billion years ago, and soon after this oxygen began to exist in the atmosphere. Photosynthesis by primitive plants and algae released oxygen, which gradually built up in the atmosphere.
Explanation:
Importan si y los estados
Answer:
un joven
Explanation:
depending on how old he/she is
Juan y María los buscan.
or
Juan y María buscan los tenedores.
Ojal<span>á que ayude.~</span>
D) “me, le” is the correct answer
