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

An organ is a group of tissues in a living organism that has a specific form and function. Organs are grouped together into organ systems. Organ systems perform a specific task.

Explanation:

B

Explanation: An organ is a differentiated part of the human body, formed by different tissues, that maintains its structure, vascularisation, and capacity to develop physiological functions with a significant level of autonomy.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.