Which of the following is not a structural aspect of an ecosystem?

Which ones are the reservoirs of sulphur and carbon cycles respectively?

Bamboo plants grow in a forest. What will be their trophic level?

Ecosystem may be defined as

What percentage of the total global carbon is contained in the atmosphere (in $, \%$)?

In a given ecosystem,the number of individuals in a species remains more or less constant over a period of time. The constancy of this number is maintained by: