|Lakes, ponds, rivers, and streams are ____ ecosystems.
|Trees that lose their leaves in the winter are called ____.
|An elephant has a trunk and two large ____ tusks.
|Most amphibians are ____ in water.
|A ____ seed is alive, but is not germinating.
|Wolves, raccoons, owls, and bats are ____ (active at night).
|A dirt-like material formed in bogs from decayed plants is ____.
|Invertebrates are animals without a ____ column.