In a living organism, what is an organ?
A. the shell or skin of an organism
B.
a group of similar cells that perform a common function
C. functional unit, or building block, of all organisms, smallest unit that can carry on the activities of life
D. a structure composed of a number of tissues that work together to perform a specific task

T.j. is struggling with whether or not it is worth trying to quit his prescription drug abuse. he used to be dedicated to his family and friends, but he worries that his abuse has driven away everyone who cares about him so there is no point in quitting. what long-term benefits can you use to try to motivate him to make the effort to quit? (3 points) improved healthy cholesterol levels leading to decreased chance of heart disease improved relationship stability and better ability to handle stress or depression increased stress levels and better chances of making and keeping friends increased blood glucose levels and less chance of developing type 2 diabetes

Answer active artificial immunization;

B. eat a very small quantity of a low-fat selection.