Legumes are valuable crops because they have protein-rich seeds and because
a. they improve the nitrogen content of soil.
b. their leaves are used as herbs.
c. their leaves are fed to livestock.
d. their bark is a source of quinine.
Answer: A
a. they improve the nitrogen content of soil.
b. their leaves are used as herbs.
c. their leaves are fed to livestock.
d. their bark is a source of quinine.
Answer: A