The two ropes seen in (figure 1) are used to lower a 255 kg piano exactly 6 m from a second-story window to the ground.

Groups of organs that work together to complete a process in the body are called: a. cells b. tissues c. nerves d. systems

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents