Aaron is making molasses cookies. The pieces of dough he puts on the cookie sheet are large, soft, dark brown blobs that smell like spices. While baking, the dough undergoes a chemical change, resulting in baked cookies that are flat, hard, dark brown disks that smell like spices. Which properties are different between the product and reactant? Check all that apply.

shape
hardness
color
odor
conductivity

Why do you think electric energy for households is generally supplied by power plants instead of by an electric generator at home.

Afood web shows who eats who in any given habitat. every living thing, from one-celled algae to giant blue whales, needs food to survive. each food web is a possible pathway that energy and matter can follow through the habitat. a food web begins with producers: organisms that convert sunlight into usable chemical energy. the food web is completed by the decomposers who turn organic wastes, such as decaying plants, into inorganic materials, such as nutrient-rich soil. decomposers complete the cycle of life, returning nutrients to the soil or oceans for use by producers. in this food web, identify the decomposer.

Given: m∠apc = 27°, m dc = 27° find: m ab