Ck 12: Biology: Plant Tissues and Organs Study Guide

See how plants have adapted to many different environments, including the water, the desert, and the air.

This comprehensive study guide covers the main terms and concepts needed for a unit on cell transport and homeostasis.

This comprehensive study guide covers the main terms and concepts needed for a unit on human chromosomes and genes.

Explore the classification and evolution of mammals.

[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about the scientific method and hypotheses.

[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about the role of observations and experiments in scientific investigation. Includes a few questions to check for understanding.

[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about streams and rivers. Includes a few questions to check for understanding.

This comprehensive study guide covers the main terms and concepts needed for an earth science unit on the scientific principles of correlation and causation. Review questions are included at the bottom of the study guide.

Review the main concepts of metabolism and replication with this study guide.

Use this study guide to review the main concepts of ponds and lakes.