40. a researcher collects high-resolution photographs of the earth taken from outer space at annual intervals for the last decade. this data would be most useful to analyze which of the following? a. human movement during crises b. migration patterns of large whales c. deforestation in the rainforest d. weather patterns during hurricanes

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