Which pair of body systems control and coordinate the cells that make up the organism?
a. nervous and endocrine
b. digestive and circulatory
c. reproductive and muscular
d. respiratory and excretory

What has been a long term effect on the panama canal

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.

Which of the following economic terms describes an increase in product price without the increase of money's worth?