Which of the following statements properly describe the first law of thermodynamics: note: you can select more than one alternative select one or more:
a. energy cannot be created or destroyed

b. energy can be changed from one form to another form of energy

c. energy cannot be changed between forms without a loss of usable energy

d. energy to do work decreases as energy changes from one form of energy to another

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