A city has harmful air pollution. An engineer wants to design a car that will produce less air pollution. Which step will best help the engineer design this product?
A. Ask residents how they feel about pollution
B. Observe when and how people use their cars.
C. Learn how and why cars produce air pollution.
D. Predict how reducing pollution could affect residents.
E. Research the most popular methods of public transportation.

How are elements arranged in a periodic table

Juju.01) 5 geologic events a group of students designed an experiment in an ice rink to represent the solar system. the steps of the experiment are listed below. 5: geologic events 1. choose a student to represent the sun. the planets are represented by two tennis balls. 2. ask the student to hold the tennis balls in each palm and spin on the ice with arms stretched out. 3. ask the student to draw in the arms after about 10 spins. 4. observe the student's arms rotate faster when they are closer to the body. 05 geologic events enors) the experiment most likely demonstrates that (2 points) 07 discussion-based sessment/module planets exert gravitational force on the sun the sun exerts gravitational force on the planets 3.07 discussion-based ssessment speed of a planet depends on its distance from the sun new version available! (3.0.119) get it now submit 18.07: module exam description

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility