Which of the following is not cited as an environmental drawback to the development of aquaculture worldwide? a. Aquaculture often leads to overexploitation of marine organisms. b. Pollution from aquaculture facilities can harm nearby wild organisms and ecosystems. c. Aquaculture can compete for space along crowded coastlines, resulting in the destruction of natural ecosystems like mangroves. d. Many farmed fish species are carnivorous, so can be an inefficient use of other potential food sources.

b. Pollution from aquaculture facilities can harm nearby wild organisms and ecosystems.

Explanation:

Aquaculture has to do with deliberate rearing and harvesting of aquatic animal species in a controlled aquatic environment for the purpose of consumption and other human uses.

Since aquaculture is concerned mainly with the aquatic environment, any form of associated pollution will be limited to the aquatic environment and harming nearby wild organisms and ecosystem might not arise.

The correct option is b.

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.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.