Describe how photosynthesis provides food for ecosystems?

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

Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down

The type of fossil where the name literally means "turning to stone".