Which rock layer is the oldest and why?             redwall limestone because limestone is older than shale   a. tapeats sandstone because it is the bottom layer   b. hermit shale because shale is the oldest type of rock   c. kaibab limestone because it is the topmost layer   d. question resources

All other things being equal the size of a population will decrease if

You are shown 2 samples of the earthes crust . the first is denser than the second . which most likley is oceanic crust

As a bee feeds upon the nectar produced by a flower, the bee may become coated with the flower's pollen. as the bee flies from flower to flower, some of this pollen may contact a flower's pistil, resulting in pollination. this relationship between the bee and the flower is an example of a. parasitism b. commensalism c. mutualism d. competition