8 th Grade Science Overview and Class Procedures Instructions Bell Work NOTE: You will not need a bell work paper today. 1)Go ahead and do this… ….If you sit on the right side of the room, go to work station 1 and get a dry erase board, a marker, and a paper towel. Take these with you back to your seat. …If you sit on the left side of the room, go to the tabletop along the purple wall and get a dry erase board, a marker, and a paper towel. Take these with you back to your seat. 2) Then wait silently for additional instructions. Oct 16, 2014

Quick Review Answer these questions on your dry erase board 1) What are two reasons that environments change? 2) When environmental change occurs, what happens to the organisms that live in the environment? 3) What is extinction? 4) Is extinction rare or common? Science SPI Adaptation

Two types of adaptations: (1)Behavioral- (2)Structural- Question: See the insects in the picture below? Is this mainly behavioral or structural adaptation? Can you see them? (what an organism does) (what an organism is…shape & form of the body) This is mainly structural adaptation because these insects have adapted by developing bodies that look like thorns. This is called camouflage SPI Adaptation Notes Science Press the Right Arrow Button to Advance through the Presentation!

Two types of adaptations: (1)Behavioral- (2)Structural- Look at the image of the hibernating bear Question: Is this a behavioral or structural adaptation? (what an organism does) (what an organism is…shape & form of the body) This is behavioral because it is what the animal does. SPI Adaptation Notes Science

Two Key Behavioral Adaptations: (1)Sexual Reproduction- (2)Asexual Reproduction- (requires 2 parents: male & female) (requires only 1 parent) SPI Adaptation Notes Science Reproduces sexually Dogs Hydra Reproduces asexually

1) The process that drives structural and behavioral change… 2) Changes and variation result from… 3) Changes and variation are enabled by… Key Adaptation Points …sexual reproduction (over many generations) and changes in the environment …genetic mutations (over many generations) and changes in the environment … is called natural selection When significant environmental changes occur, organisms must also change (adapt) by either changing their behavior or changing their body structure or both. SPI Adaptation Notes Science

SPI Adaptation Notes 4 Phases of Natural Selection Phase 1 Phase 2 Phase 3 Phase 4 Science

Adaptation Questions Here is an example that you might see on a quiz or test. Notes Science SPI Adaptation

Adaptation Questions Here is an example that you might see on a quiz or test. Notes Science SPI Adaptation

Adaptation Questions Here is an example that you might see on a quiz or test. Notes Science SPI Adaptation

Adaptation Questions Here is an example that you might see on a quiz or test. Notes Science SPI Adaptation

Adaptation Questions Here is an example that you might see on a quiz or test. Notes Science SPI Adaptation