Choose an equivalent system of equations to the following system: Fx Gy = H Qx Ry = S 3Fx 3Gy = 3H Qx Ry = S 3Fx Gy = 3H Qx 3Ry = S 3Fx 3Gy = 3H Qx − Ry = S Fx 3Gy = 3H Qx Ry = S.

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Which of the following always exist between two objects having mass ● elastic force ● contact force ●gravitational force ●magnetic force

In an ecosystem, marsh snails feed on phytoplankton and painted turtles feed on marsh snails. pollution has resulted in the depletion of phytoplankton. what effect would this situation likely have on the population of marsh snails and painted turtles? as phytoplankton were destroyed, the population of marsh snails would most likely then the population of painted turtles would mostly likely a. 1. increase 2. decrease 3. stay the same b. 1. increase 2. decrease 3. stay the same