In this lab, you will be using black worms ( Lumbriculus variegatus) to investigate the effects of various chemicals on their pulse rate. Which of the following correctly describe some of the characteristics? Select all that apply.
1. its blood circulates in a closed circulatory system
2.Freshwater worm found throughout North America and Europe
3.Prefers the shallow habitats found at the edges of ponds, lakes, or marshes
4. Feeds on decaying vegetation and microorganisms.
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In this lab, you will be using black worms ( Lumbriculus variegatus) to investigate the effects of v...
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