Justify why the predator/prey relationship is a community level interaction.  

Natural forces that can alter ecosystems include seasons and climate changes. t or f

What is the final velocity of the initial velocity of 25 and -50?

How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.