Which of the following is not a soil property influenced by microorganism activity?

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

Does masterbation affect height growth or loss of growth hormone?

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important