JND stands for: Select one:
a. Just noticeable theory
ob. Just noticeable direction
c. Just negotiable difference
d. Just noticeable difference​

LETTER D

Explanation:

Weber's Law, more simply stated, says that the size of the just noticeable difference (i.e., delta I) is a constant proportion of the original stimulus value. ... The Weber fraction equivalent for this difference threshold would be 0.1 (delta I/I = 10/100 = 0.1).

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs