Which of the following is a drawback to polyculture?

A. It allows standardized growing techniques.
B. It allows multiple varieties of plants to exchange multiple resources from and to the soil.
C. It offers predictable large yields of a single crop.
D. It is challenging to development and maintain.

answer; i believe the answer is (polygenic inheritance;

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

age range would be the answer

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus