Here are your goals and key ideas to learn in Case #2!
When you finish this case, you should be able to:
Understand the importance of soil and how the things
that are in it relates to its ability to support good
Tell how plants adapt to soils that aren't perfect.
Describe the relationship between soil and plant life.
Recognize that there is a lot of important activity
going on where the roots of plants are located.
Use new vocabulary words such as nutrients, soil particles,
texture, structure, organic matter, topsoil, and subsoil.
Describe what types of living organisms can be found
in and around soil.
Use observation and classification to identify components
of the soil.
Recognize other things that can be used in place of
Describe the importance of soil "critters" and how
they break down organic matter.
While you're solving the mysteries, pay special attention
to these key ideas:
Soil makeup is important in keeping plants alive. We
can change soil composition in ways that will help a
plant's ability to survive and grow.
Microbes, solid particles, chemicals, and living plant
material all work together to produce a balance that
supports a variety of life forms.
Soil is made up of three basic units: sand, silt, and
Composting is nature's way of changing organic wastes
into plant food that is used to keep many living things
Go on to the Facts of the Case.