Jill's class is studying how rocks are formed. jill's teacher showed them a picture of a type of rock. then, jill's teacher made a peanut butter and jelly sandwich and explained that one type of rock is formed when layers of sediment are squeezed and cemented together. after the rock is formed, you can still see the layers in the rock. what type of rock was jill's teacher trying to them remember by making a peanut butter and jelly sandwich? a) mineral rock b) igneous rock c) metamorphic rock d) sedimentary rock

You are observing different types of cells in your science lab. one cell has many chloroplasts. what is the most likely function of this cell? a. energy production b. photosynthesis c. reproduction d. digestion

Look at the photo of the leaf, which term best describes this leaf ? a-simple.b-parallel.c-lobed.d-tooth.

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