Mercury is a metal pollutant that can disrupt the ecosystem. Why is mercury so disruptive to the ecosystem? A: Organisms excrete the mercury out as waste. B: Organisms use mercury as an enzyme to speed up reactions in an organism's body. C: Mercury slows down the respiration rates of primary consumers. D: Mercury can become concentrated in the tissues of organisms.

Mercury

Inject a little mercury (Hg) into a horizontal glass capillary tube. The two ends of the horizontal mercury column are convex. If heating the right convex of mercury, the mercury in the capillary will move ( ). A: to the left B: to the right C: to both ends D: no

The toxicity of alkyl mercury is 10-100 times greater than that of soluble inorganic mercury, is it right?

Mercury Seven are astronauts.

Mercury is a metallic element

The toxicity of alkyl mercury is 10-100 times greater than that of soluble inorganic mercury, is it right? A: 正确 B: 错误

Queen are a British rock band that formed in London in 1970. What is the classic line-up of the band Queen? A: . Freddie Mercury and Brian May. B: . Freddie Mercury, Brian May and Roger Taylor. C: . Freddie Mercury, Brian May and John Deacon D: . Freddie Mercury, Brian May, Roger Taylor and John Deacon

Mercury is the brightest planet in the sky.

Mercury freezes if it is cooled to＿.