Part 4: Analysis Questions (15 points) 1. Consider the device you created:
A. (2pts ) Is energy exchanged between your system (the device) and its surroundings?
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B. (2pts) Is matter exchanged between your system (the device) and its surroundings?
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C. (3pts) Is it an open, closed or isolated system? Explain.
2. (2pts) What is the law of conservation of energy?
3. Describe two examples of how the law of conservation of energy is demonstrated in the device you created

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos