Directions: On the left is a photograph of two live, young water fleas inside a female water flea, located above her digestive tract. On the right is a photograph of a brood of ducklings. Female water fleas can reproduce asexually by developing embryos without fertilization. The brood of ducklings is the result of sexual reproduction. Use the photographs to answer any questions that follow. The young water fleas are different from the ducklings because all of the young water fleas produced through asexual reproduction are guaranteed to

garbage disposal because lysosomes dispose of old cell parts like garbage disposals dispose of old food.

1. the geologists have established a set of principals that can can be used o determine the relative ages of rock. this principal is applied to sedimentary and volcanic rocks. the rocks exposed to wall of grand canyon has layers and by studying the number of horizontal layers in the rock(strata) the relative age can be determined. the layer first formed will appear at the bottom and the the layer of strata last formed appear at the top. by using this information the approximate age of rocks can be determined.

2. carbon dating is used to find the relative age of rock in numbers which means for the rocks that has age between 1-70,000 years.

3. for the rocks of age range between 1,000 - billion of years potassium-argon dating is used.