Out of all the choises
a. cells are the building blocks of life
b. cells all arise from pre existing cells
<span>c. cells are the basic living units of structure an function </span>
<span>d. all of above
</span>it would be d
The human activity that creates the least threat to global stability is : Reuse of Plastic bags.
Plastic bag need a lot of time to be degraded in the soil which will create a threat to the environment. Reusing plastic bag will reduce this threat.
hope this helps
