The current rate of species extinction is estimated to be $.........$ times faster than the pre-human extinction rate.

In the last $500$ years,$784$ species have gone extinct,out of which .............. species of vertebrates were extinct.

Identify the odd one out regarding recent extinctions.

The impacts of loss of biodiversity may lead to:
$I$. Lowered resistance to environmental perturbation
$II$. Decrease in plant production
$III$. Increased variability in ecosystem processes like water use,pest/disease cycle,and plant productivity
$IV$. Increase in plant production
Choose the correct option.

If the current rate of species extinction continues,what percentage of all species on Earth will become extinct within the next $100$ years (in $\%$)?

How many mass extinctions have occurred since the origin of life on Earth?