Plants and animals cannot use the nitrogen in the air. Which processes convert
nitrogen into forms which living organisms can use?
O
A) photosynthesis in plants
Ch
B) cellular respiration in plants
IC) bacteria in the soil
D) lightening in the atmosphere

An educatethe yuan dynasty was responsible for which of the following: i. improving the road system ii. increasing sea trade with india and south east asia. iii. extending the canal system iv. brutal warfare and ruthless killing of people in order to take over china. a. i & iii c. iv only b. ii only d. all of the above member of the government

After nine states had ratified the constitution by mid-1788, other states quickly followed. all thirteen states had to obey it. it became law in the united states. none of the states had to obey it.

6. how are goods and services distributed in a free market system?