I'll answer number 3 for you.
Which are decomposers within a spruce-fir forest ecosystem?
the answer is mushrooms.
Some mushrooms are known for growing over dead things..... I think.
Complete question, Answer and Explanation:
Due to technical problems, you will find the complete question, the answer, and explanation in the attached file
Answer:
1. Most water we use goes to agriculture
Agriculture places significant pressure on the world's fresh water, accounting for nearly 70% of all water withdrawals. That number can rise to more than 90% in countries like Pakistan where farming is most intensive. Unless substantial efforts are made to reduce food waste and increase the water-use productivity of farming – to get more “crop per drop” – water demands in the agricultural sector are projected to increase in the coming years to keep up with population growth.
Explanation:hope you like this
The farmer's action most likely have a negative impact on the ecosystem because may be there is no predator or controlling agent of that bird.
<h3>Why introduction of new bird cause problem?</h3>
We know that one organism is responsible for controlling the population of other organism so if such type of controlling agent is present, the organism grow rapidly and can harm the whole ecosystem.
So we can conclude that farmer's action have a negative impact on the ecosystem due to presence of no predator or controlling agent of that bird.
Learn more about bioagent here: brainly.com/question/842527
Hey the answer to your question is that <em>Devegetation increases nutrient export
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