Clenching the fingers to make a fist, then relaxing and straightening them is an example of :Flexion followed by extension
To put it simply, joint will become shorter during flexion and will become longer during extension. When he made a fist, he curled ul the joints in his hand, and when straightening the arm, he elongate the joint on his elbow
Answer:
Evolutionary Psychology.
Explanation:
The perspective of Evolutionary Psychology was formed by Charles Darwin with his theory of Evolution in 1859.
<u>According to this perspective of psychology, it explains that evolution has it's impact on mental and psychological traits. These traits include memory, perception, language, etc</u>.
The history is this perspective can be traced back to the Functionalism by William James.
This <u>perspective of psychology also helps to understand disorders</u> such as phobias of snakes, survival, etc.
So, the correct answer is Evolutionary perspective.
Answer:
The cell membrane is semipermeable because it prevents harmful toxins from entering and damaging the cell. At the same time, the cell membrane allows nutrients and other helpful substances through. In this way, the cell membrane is like a security guard of the cell.
Explanation:
HOPE U UNDERSTOOD
