Food Chains: Food chain is a model that shows flow of energy and nutrients from one organism to another organism in an ecosystem. ... A food also shows the relation between organisms as who they are related with each other by the food they eat. Plants and animals requires some type of food for survival.
The answer is B, geologic map. the reason is the study of Geological history is <span>The specific science that is devoted to the study of the Earth, particularly the solid Earth and the rocks that compose it. I hope this helps. </span>
In the spinal cord, the grey matter is relative to the white matter.
Study of cork bark, hope this helps!