Bell Ringer: Explain why a sea star would die when placed in fresh water and a trout would die if placed in salt water using concepts learned during this unit.
We talked about how some organisms maintain homeostasis in different aquatic environments. Marine: drink water and actively pump out salt. Fresh water: do not drink water and excrete excess water in urine.
Today we completed a microscope lab where students looked at several types of cells using the microscope.
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