18. Which of the following is a benefit of intensive farming? A. A concentrated animal feeding operation is the smallest type of intensive farm.

B. Animals raised in intensive farms are healthier.

C. The food produced on intensive farms is cheaper than that on open ranges.

D. There are nearly one million types of intensive farms in the US.

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos