Most commercial fertilizers supply nitrogen both as ammonia or ammonium and as nitrate. Yet, plants are much more efficient at taking up nitrate in their roots. What might be a benefit of adding both forms of nitrogen to the soil

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)