Soil Layers worksheet with labeling and fill-in-the-blank questions.

Based on my analysis of the soil layers diagram and general knowledge about soil science, I can now answer both parts of this worksheet.

For question 1: I need to match each term with its corresponding layer in the diagram from top to bottom:
- humus/organic → topmost dark layer
- topsoil → second layer (lighter brown)
- subsoil → third layer (reddish-brown)
- parent material → fourth layer (grayish with larger rocks)
- bedrock → bottommost solid rock layer

For question 2a: "__________ is a gardener's best friend." This is referring to topsoil, which contains the nutrients and organic matter that plants need to grow. Gardeners rely on rich topsoil for successful gardening.

For question 2b: "Humus is made from __________ plants and animals." Humus is formed from decomposed or decaying organic matter, so the blank should be filled with "decaying" or "dead."

The complete solution is:

1. Matching the terms to the correct layers (from top to bottom):
- humus/organic → topmost layer
- topsoil → second layer
- subsoil → third layer
- parent material → fourth layer
- bedrock → bottom layer

2. Fill in the blanks:
a. Topsoil is a gardener's best friend.
b. Humus is made from decaying plants and animals.