How would an increase in carbon dioxide concentration in the atmosphere change the green house effect? A. Carbon dioxide would change the greenhouse gases. B. It would make the greenhouse effect stronger. C. There would be less of a greenhouse effect. D. The greenhouse effect would stop happening.

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.