Astudent wonders if the bubbles on this water plant are often gas o2. however identifying a gas as o2 with direct evidence requires many kinds of equipment. which observation would provide indirect evidence that supports a hypothesis that the bubbles are o2. a. an increase in bubbles on the plant when it is moved under a brighter light b. a description of the shape of each leaf after a plant is kept under did light c. a decrease in approximate size of each leaf on plants kept in darkness d. a count of the bubbles produced over time by one plant under bright light

In this experiment, you will use a track, a toy car, and some washers to explore newton’s first two laws of motion. you will make observations and collect data regarding the motion of these objects. in the space below, write a general scientific question that you will answer by doing this experiment.

Since the investigative question has two variables, you need to focus on each one separately. thinking only about the first part of the question, mass, what might be a hypothesis that would illustrate the relationship between mass and kinetic energy? use the format of "if…then…because…” when writing your hypothesis.

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)