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

Blood made up of red and white blood cells work together to form

When analyzing tree rings, what do scientists assume a thin ring indicates?

Coat color in cats is determined by genes at several different loci. at one locus on the x chromosome, one allele (x ) encodes black fur and another allele (xo) encodes orange fur. females can be black (x x ), orange (xoxo), or a mixture of orange and black called tortoiseshell (x xo). males are either black (x y) or orange (xoy). bill has a female tortoiseshell cat named patches. one night, patches escapes from bill\'s house, spends the night out, and mates with a stray male. patches later gives birth to the following kittens: one orange male, one black male, two tortoiseshell females, and one orange female. what are the genotypes of patches, the stray male, and the kittens?