Which of the following factors determines whether a protostar becomes a star

A. surface temperature

B. age

C. color

D. mass

The government uses the following methods to regulate pollution. Which of these results in the most pollution reduction by the firms with the lowest cost of pollution reduction and the least pollution reduction by the firms with the highest

How do humans contribute to climate change?

A poster advertising a student election candidate is too large according to the election rules. The candidate is told she must reduce the length and width of the posted by 20.0%. By what percentage must the area of the poster be reduced?

List and describe each air pollutant

when are trees in deciduous forest extremly important in the water cycle

Aside from the possibility of career advancement, for what other reasons is professional development important? Name at least one and explain your choice. Your response should be at least five sentences.

PART A: Which statement best describes the relationship between the two newspaper articles?

A short summary of one's skills, educational background, employment history and accomplishments is a résumé. True or False

Rob is looking for properties to set up his shoe factory. Which factor of production is Rob seeking to use?

List three steps that show how the sun provides energy for surface ocean currents