Alley cropping’ means:

A.Growing of pastures in between two widely spaced rows of fast growing trees
B.Growing of field crops in between two widely spaced rows of fast growing trees
C.Growing of only short duration crops in between two widely spaced rows of fast growing trees
D.Growing of only fooder crops in between two widely spaced rows of first growing trees

An ecosystem is:

A.A community of organisms interacting with one another
B.The abiotic component of an area
C.The part of the earth and its atmosphere where living organisms exist
D.A community of organisms together with the environment in which they live