When the sun produces energy, it consumes hydrogen and produces

A radium

B helium

C nitrogen

OD chromium

1. The Declaration of Independence stated that all men were created equal and that they had natural rights that could not be taken away. How were these beliefs enforced in the early United States

Distinguish between spiral and elliptical galaxies in terms of the presence or absence of a disk component and halo component. How does this difference explain the lack of hot, young stars in elliptical galaxies?

Which of the following are characteristics of a mineral (select all that apply) ? A. It possesses a specific crystalline structure. B. It is naturally formed. C. It possesses a specific chemical composition that varies only within certain limits. D.

Global winds that blow in fairly constant patterns are called

Which greenhouse gas has an average lifetime in the atmosphere of a few weeks to thousands of years and is the largest contributor to climate change? a) carbon dioxide b) methane c) nitrous oxide D) fluorinated gas

Iron: A. is forming today in the Great Lakes region as banded-iron formations (BIFs). B. is stronger and weighs less than aluminum. C. was the first of the common metals (iron, aluminum, and copper) to be used by humankind. D.

Glacier store about 70% of the worlds freshwater true or false

What economic system would promote people buying more products and technology?

What is often a difference between the hearths of folk culture and those of popular culture

Why did the Mongols launch the deadly attack on Nishapur