The sundew plant has to digest insects because see concept 37.3 (page 816) the sundew plant has to digest insects because see concept 37.3 (page 816) its flowers are fertilized by pollen in its digestive tract it lives in a dry environment and uses moisture from the insects' bodies it has lost the ability to perform photosynthesis it's a method of self-cleaning to rid the plants of insects that get stuck in the plant it obtains nitrogen from their bodies that it cannot get from the soil

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