Spiral galaxies often appear bluish due to an abundance of

a. old stars.

c. young stars.

b. black holes.

d. white dwarfs.

Why did hitler believe the swastika embodied anti-semitism

Calcite and quartz are minerals. What properties do they have in common? How do they differ?

Whuch practice does not protect the environment? a) efforts to regulate carbon dioxide emissions b) increased use of wind and solar power sources c) frequent usage of a SUV d) decreased use of fossil fuels

Which statement is true about coal and natural gas? ... Both are renewable resources ... Both require wind in order to work ... Both lead to greenhouse gases and climate change ... Neither one causes global warming

What ocean does not border Asia's coast

What is the disadvantages of the formal sector

Which of the following is not part of the definition of a mineral? A) Naturally occurring B) Organic C) Orderly crystalline structure D) Definite chemical composition

Como é formado o relevo africano?

What would you do if climate hazards were hit your local area with flooding of a local river because of a thunderstorm?

What event increased international support for the creation of a Jewish national homeland in Palestine? A. the Arab-Israeli War B. the signing of the Balfour Declaration C. the Holocaust D. the British withdrawal from Palestine