A. near the boundary ocean crust and continental crust.
Crude density and ecological density are both related but different. Ecological density is the portion of land that a certain species can colonize, where as crude density is the land within the organism's range.
Answer:
B
Explanation:
When an animal eats a plant, the energy doesn't change to radiant energy because it's eaten and it isn't living to produce radiant energy.
Decreased lung function
can develop cardiovascular problems
shortness of breath
cancer
Answer:
Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.