In the following example, what is the independent variable? hypothesis: mice receiving drug-a will pass through a maze faster than mice receiving a water placebo. experiment: 200 mice from a genetically identical inbred line are divided into two groups. half receive drug a and the other half receive the placebo. the time it takes for each mouse to pass through the maze is determined. the mice are treated the same in all other respects.

Asap timed! 1. ice core samples from glaciers ice caps contain bubbles of ancient atmosphere that are in layers based on age. what questions are scientists most interested in? a. how the amount of water vapor needed to make the ice has changed b. how the amount of ozone has changed over time.c. how the amount of ice in each layer has changed over time d. how the amount of carbon dioxide has changed over time 2. what produces milankovich cycles ? a. sunspots ams solar flare on the suns surface b. changes in the earths orbit c. gravitational changes bases on the position of the sun and the moond. cycles of vegetation that result in desert and rainforest conditions