PLZ HELP ME The passage below describes how a catalytic converter in a car works. How a Catalytic Converter WorksGases produced by a car’s engine fl ow through the catalytic converter, which contains metals. These metals start a chemical reaction that makes the gases released by the car less harmful to the environment.

The catalytic converter most likely was developed in response to...

(1) the demand for more energy-efficient cars
(2) the demand for increased car engine power
(3) a need for lower-priced cars
(4) a need to reduce air pollution

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.

Can ground tissue do photosynthesis