A brief exploration of what cave explorers do on the job, including the equipment they use and the training they need, plus real-life instances of exploring caves such as Kentucky’s Mammoth Cave.
A kindergarten-level introduction to grasslands, covering their climate, plant and animal life, and such defining features as their varied grasses.
A kindergarten-level introduction to mountains, covering their climate, plant and animal life, and such defining features as their rocky peaks.
