Which of the statements is true of reflexes?

A. All reflex signals must go to the brain.

B. They require conscious thought.

C. They are slow and gradual responses.

D. They are involuntary.

9. the history of life on earth is recorded in

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

Where does the citric acid cycle take place in eukaryotic cellular respiration?