Answer: The most common tones produced by sirens in the United States are "alert" (Steady) and "attack" (wail). ... Attack Warning – A 3 to 5 minute wavering tone on sirens or a series of short blasts on horns or other devices. The Attack Warning signal means detection of an actual attack or accidental missile launch. The sirens are usually for the people surrounding the area to let them know that they need to evacuate immediately.
I hope this helps
~Princess <3
Explanation:
For 3D printing, the part can be printed on demand and shipped without any ramp up or tooling, resulting in a lead time as short as 2 or 3 days. The combination of the reduced lead time and the more efficient prototyping process reduces the time to market. This is a great advantage since delay creates uncertainty.
Answer:
Barack Obama defines the American dream as the idea that anyone who lives in the United States can achieve success, through hard work, determination, and rise from the very beginning, regardless of his/her origin, race, financial situation, etc.
Explanation:
Obama's figure is the best example of his vision of the American dream, as he came from a humble family and became the first Afro-American president of the USA.
He highlights the opportunity, considering that all citizens should have equal rights and be able to get rich and successful. The most important thing is to give an opportunity to everybody.
To achieve the American dream society should create equal opportunities for everyone, people should open to each other and appreciate cooperative efforts rather than individual efforts.
Separate but equal facilities between whites and blacks (not weren't really equal)
Answer:
Ancient china and Egyptian civilization shared and differed in a number of factors.
Explanation:
Both of this civilizations had access to rives which are; The river Nile for Egypt and the Yellow river for China. This rivers acted as sources of water that played a great role in both civilizations. Rivers acted as a source of fish, they also flooded making the nearby land fertile for farming in early civilizations.
Both civilizations had a special way of writing that helped them communicate important ideas. The Egyptian had the famous hieroglyphic being the most famous among their ancient scripts.
The two civilizations had formalized governments, however, this governments differed in terms of ideology. The china government was a monarchy while the Egyptian monarchy was a theocracy.
They both were developed in architecture but differed in the structures they build. The Chinese civilization built the great wall of china while the Egyptians built the pyramids. This structures exist to date.
