4. What is the major function of the respiratory system?
A. Take oxygen in and get rid of carbon dioxide.
B. Take carbon dioxide in and get rid of oxygen.
C. Make energy using carbon dioxide
D. Make energy using oxygen

Below is a description of a resource that you're considering using for a research paper. as you read the description, keep in mind what you've learned about historical thinking skills and use those skills in evaluating whether or not to use the source.

Which statement best describes an advantage of indirect democracy over direct democracy? a. it can make decision making more efficient b. it can citizens feel more connected to government c. it can be more responsive to citizens' interests d. it can better reflect the democratic principle of majority rule

Arecent challenge to the european union created by a member state is?