D. Taiga. It says the it contains the largest expanse of untouched boreal forest in the world.
Taiga is the world's largest land biome, making up 29% of the world's forest cover. The largest areas are located in Russia and Canada. The taiga is the terrestrial biome with the lowest annual average temperatures after the tundra and permanent ice caps.
<h3>content validity - how well a test measures the behavior for which it is intended</h3>
Example -
<em>A mathematics teacher develops an end-of-semester algebra test for her class. The test should cover every form of algebra that was taught in the class. If some types of algebra are left out, then the results may not be an accurate indication of students’ understanding of the subject. Similarly, if she includes questions that are not related to algebra, the results are no longer a valid measure of algebra knowledge.</em>
Another example is that content validity can be used in a clinical or business setting
hope this helps :)
Not sure but black are bad so i would say b or d
Explanation:
Sorry but I don't Understand question
I believe the answer is: avoidance of guilty feelings and <span>negative reinforcement.
The avoidance of guilty feelings is a defense mechanism because guilt could often lead to personal stress.
The negatve reinforcement under this situation refers to the effects that might cause a certain decrease in our standard of life (such as negative treatment from other people or some physical harm)</span>
