Answer:
True
Guard cells close openings in the leaves slowing down water loss.
<span>After a long time, a mature community is established and this community does not change unless it is disturbed.</span>
Animals obtain nitrogen by eating plants which has absorbed nitrogen from the soil.
friction is a force that opposes motion and significantly slows the cars as they move on the track. While it is easy to believe that friction is bad for the ride, it is one of the forces engineers consider in ensuring passengers have a safe ride.
