Which Ecosystems Are More Productive: Tropical Rain Forests or Northern

question 109

Essay

Which ecosystems are more productive: tropical rain forests or northern coniferous forests? Why?

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Definitions:

DCIS

Ductal Carcinoma In Situ, a type of early-stage breast cancer where cancer cells are confined within the ducts of the breast.

Sarcomas

A rare type of cancer that arises from transformed cells of mesenchymal origin—thus, connective tissues, including bones, muscles, and fat.

Connective Tissue

Tissue that supports, binds together, and protects the organs and other tissues of the body.

Stereotactic Biopsy

A minimally invasive procedure using a three-dimensional coordinates system to locate and remove a sample of tissue for examination.