Concentrations of ozone-eating atoms or molecules in the ...

[sc00by25]

Concentrations of ozone-eating atoms or molecules in the neighborhood of one in a thousand pose no threat to the ozone layer.
 
  What will be an ideal response?

Question 2

If a tree's range can migrate 30 km in a century, and warming is expected to cause isotherms to move north- and southward 300 km in a century, what can be expected to occur? Explain. Would Scotch pine (200 km per century) be similarly affected?
 
  What will be an ideal response?

[vkodali]

Answer to Question 1

Not so, as discussed in the chapter. Even small concentrations of certain
molecules cause deleterious effects because they destroy ozone and are reconstituted to
destroy again and again.

Answer to Question 2

The trees cannot migrate fast enough (at least without human assistance).

[sc00by25]

Excellent

[raenoj]

Gracias!