Arizona deserts have been transformed by: chemical fertilizers use of pesticides irrigation canals recycling plants

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

For an animal living a diplontic cycle, meiosis is limited to: producing gametes producing growth fertilization development of the zygote

Why did europeans call the bubonic plague the black death? because that is what the chinese called it because of the black boils that developed on the skin of infected individuals because the plague brought much destruction to europe because the disease was spread by black rats