Biology: Living Systems

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Chapter 21: Transport 
Plant Tissues
This PDF document provides an introduction to flowering plant tissues. Go to page three to view slides of xylem and phloem. Diagram what you see.

The Heart: An Online Exploration
At this site you can follow the path of blood through blood vessels. It includes a discussion of the development and structure of the heart. How many times does a human heart beat during the life span of an average person?

Lifeblood
This site includes a description of the parts of blood, including plasma, blood cells, and platelets. How many liters of blood does an average person have?

 
 
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Biology: Living Systems