Modeling fossil formation using leaves, twigs, sand and water. Pour 4 inches of water in a container first. Then add 2 inches of sand. Spread twigs and leaves in a thin layer on top of the sand. What would you see in a week? Add 2 more inches of wet sand on top of leaves and twigs and let dry for 2 weeks. At the end of 3 weeks, gently break apart the layers. What do you see on the bottom and top layers of sand and in the leaves and twigs.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

paper covers rock.

explanation:

rock only smashes scissors.

the answer is d. none of the above