What is true of composite volcanoes? a. lava is released in iconoclastic chunks b. they are not very explosive c. lava is thin and flows easily d. all of the above are true

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Energy flows from the producer level to the level. is called

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in