The observed frequency increases when the source and observer approach each other and decreases when they move apart. This is called the what?

1) emission spectrum

2) Doppler effect

3) wavelength

What makes the United States multicultural? A. The efforts to make everyone behave the same way B. The restrictions in immigration laws C. The existence of privileged groups D. The presence of many ethnic groups

The title of the passage is "The Orchid's Secret." Based on the information in the passage, what secret may the title be referring to? Use information from the passage to support your answer.

Where does a large percentage of e-waste wind up? Incinerators Recycled in peripheral nations Repurposed into new electronics Dumped into ocean repositories

What is unemployment?

Which founding father held the role of lead military general during the american revolutionary war

What is the name of the charged particles in the thermosphere?

How do you think the British in England feel about the colonist response to their taxation efforts

What are two adjectives for due process

Ms. Smith has just moved to Florida and would like to register as a voter. Which level of government is responsible for setting the general rule for voters registration

With traditional savings account, you could be charged a fee if