If the top portion of plants grow "up", explain why a small tree on a hillside does not grow straight out from the hillside? A. The tree is growing toward water

B. The tree is resting in the hillside

C. The tree is leaning toward the top of the hill so rain won’t wash it off

D. The tree’s roots and trunk are growing in response to gravity

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs