Which of the following is decayed organic matter in soil? A. humus
B. bedrock
C. clay
D. silt

Identify and describe the three ways that mutations affect organisms.

Which statement describes james chadwick’s discovery.

Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green