Question

7 which of these is an example of a positive feedback loop? a plants closing their stomata in response to water loss b the removal of salt from a saltwater fish during osmoregulation c the release of glucose by the liver in response to low blood sugar d platelets stimulating the activation of more platelets during clotting

Explanation:

Positive - feedback loops amplify a response. In blood - clotting, platelets stimulate more platelet activation, increasing the clotting response. Options A, B, and C are examples of negative - feedback mechanisms that maintain homeostasis by counteracting changes.

Answer:

D. platelets stimulating the activation of more platelets during clotting