In which situations is the principle of cross-cutting relationships useful in determining relative age? Select three options. SELECT THREE

A fault breaks through sedimentary layers.
The formation of an intrusion in the Earth’s surface.
Igneous rock forms between sedimentary layers.
Sedimentary layers form over millions of years in a lake bottom.
Lava flows form on top of one another from several eruptions over time.

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