The correct option is A.
Puppies normally growl when playing; this type of growling is not aggressive. The growling that are made in such situations indicate the pleasure of the puppies as they are playing together, such growl does not result in biting or any other injuries.
Answer:
[The recent activities of fossil fuel combustion has had adverse effects on the ozone layer]- B.
Answer: Calcite, aragonite, vaterite
Explanation:
