Highlight details that led scientists to draw a conclusion. 2000: Meanwhile, a team led by American scientist Andrea Ghez announces an extraordinary finding: some amazing force is whipping stars faster and faster around the center of the Milky Way. Each year the stars' speeds increase by about 250,000 miles (more than 400,000 kilometers) per hour! The team concludes that a supermassive black hole can explain this -- but not everyone else agrees.

—A Black Hole Is NOT a Hole,
Carolyn Cinami DeCristofano

Why did scientists conclude that a black hole is at the center of the Milky Way?

A. Stars near a black hole die.
B. A black hole makes the Earth spin.
C. A black hole produces a strong force.
D. A black hole slows stars down.

Which statement best describes the narrator's reliability? the narrator is unreliable because o she does not reveal how old she is until the end of the passage.

To celebrate black history month, we will be learning about the lives of some african americans. your assignment is to find biographical (life story) information about one famous african american historical figure. be sure that you find the following information about the person you select: date of birth, country of origin, how he or she (or his/her family) came to the united states, why he/she is famous, and how the person died (if applicable). we will use the information that you gather in the research on an in-class project. be sure to keep track of your sources; your final project will require a works cited page. in an internet search engine, which group of keywords is most appropriate for this assignment? a) black history month, date of birth b) african, american, people, biographies c) famous people, africa, america, project d) african american, people, countries, famous

What is a mechanism by which organisms maintain homeostasis when the level of one substance influences the level of another substance or the activity of an organ.