Scientists believe that early plants released oxygen in a process called photosynthesis. where did the carbon dioxide needed for photosynthesis come from in the early atmosphere?

The answer on USA test prep is D. Early bacteria and plants released carbon dioxide as well as oxygen when they performed photosynthesis. because bacteria could have been aerobic back then and released carbon dioxide for the plants to use in photosynthesis.

the answer is admiramos

the rule for verbs is whoever you are referring to (in this case 'nosotros'), you need to change the ending of the word.

nosotros - amos

yo - o

tu - as

el, ella, usted - a

ellos, ellas, ustedes - an

(examples: nosotros bailamos (instead of bailar) or yo hablo (instead of habla)