The muscular system helps with and the skeletal system helps with . Question 1 options:

movement; oxygen exchange

structure; movement

oxygen exchange; structure

movement; structure

Which describes how weathering and erosion are different? weathering is caused by water. erosion is caused by wind and ice. erosion transports sediments. weathering is a natural process.

What causes temperature extremes in the desert

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots