Marshall wants to remove a tree stump from the ground. To do this he puts one end of a long beam under the stump and puts all his weight on the other end. His weight is just enough to lift the stump. The stump weighs 400 N. Marshall weighs 250. What is the mechanical advantage of the long beam Marshall is using?

your answer is "the 1950's"

b. heterotroph

explanation:

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

silty loam

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