4. Design two separate experiments that would directly test the hypothesis of the following scenario (neither experiment should rely on the results of the other experiment). Identify the control group, independent variable, and dependent variable. Hypothesis: The reduction in the enzyme cognitase results in impaired memory in mice.

not only is it colder, it also becomes darker, less salty, and more dense.

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.