Scientists used major changes in life forms in the fossil record to form the geologic time scale.

In this activity, you will use your knowledge to create a project that illustrates your understanding of the seven defense mechanisms. you choose the type of project: write a short story, poem, play or create a podcast or video using all seven of the defense mechanisms discussed. you may either have seven different characters, each with a particular defense mechanism, or have one or two characters displaying a variety of defense mechanisms. the key is to demonstrate your understanding of the characteristics of each defense mechanism.

Which steps are important when designing and conducting a scientific experiment? hide the results from fellow scientists. identify the independent variable. eliminate all dependent variables. address any confounding variables. form a non-falsifiable hypothesis.

He constitution dictates that the presiding officer of the senate is the a) majority whip. b) vice-president. c) majority leader. d) speaker of the house.