The most outstanding danger at present for survival of living beings on Earth is:

The.most abundant substance of living beings

Which is the essential element for survival of all living organisms?

The percentage of living species in danger is

Most abundant element in living beings is:

Imagine that all the exhaustible natural resources are exhausted by human activities. Do you think survival of living beings would be possible.? If yes, why?, If not, why not?

Which step is required for better survival of human beings

Why reproduction is necessary? Is it essential for survival? If a living organism does not reproduce, to which category will it belong, living or non-living?

The most abundant 6 elements found in living beings are