Which of the following changes in deciduous forests occurs in the winter? a. trees regain their leaves. b. trees block the flow of water and nutrients to their leaves. c. the leaves of trees begin to lose their chlorophyll. d. trees live off of stored nutrients.

The correct answer is option d. Trees live off of stored nutrients.

The Deciduous forests are the forests, which experience two seasons. The leaves of the trees present in these forests are broad. In the winter, these trees shed their leaves and depend on the stored food for the survival during the winters as they are not able to synthesize food in absence of leaves.  

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation:

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.