Balance the equation
n2o5 + h2 -> nh3 + h2o

I hope this is it. I'm not really sure.

a sequence is a function whose domain is the set of natural numbers.

natural numbers are all the negative and positive integers

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.