Cinco propuestas para evitar la contaminación en tu localidad en donde vive​

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

Which is not an example of a  cultural  bond found in a nation-state? a. a holiday traditionb. a common religionc. a favorite placed. a shared history

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a. light in water b. light in vacuum c. sound in air. d. sound in water