Which of the following best represents a simple food chain? O A. Producer → primary consumer → secondary consumer
O B. Producer → secondary consumer → primary consumer
O C. Primary consumer → secondary consumer → producer
O D. Secondary consumer → primary consumer → producer
CLINI

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.

airlines i think? or a cruise boat? does this work out for u? ?

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.