Distribution of organisms
Discovering environmental preferences could start by making observations of existing distributions in nature, or by giving organisms choices and observing how they distribute themselves over time.
Observing patterns in the distribution of a simple plant
Use a quadrat to estimate the population density of a simple plant that grows on the bark of trees. Relate its distribution to environmental factors.
Investigating the response of worms to soil improvers
Add biochar to compost (or soil) and investigate whether worms prefer compost (or soil) with or without this additive.