Carbon dioxide combines with water to form carbonic acid.
a. true
b. false
a. true
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Generally speaking, the third agricultural revolution occurred when?
A) about 2,000 years ago B) about 1,000 years ago C) in the 18th century D) in the 20th century E) It just started with the introduction of GMOs.
Imagine that you are an urban planner working in the New England area. What recommendation would you make, based on the Staffordshire University study, to increase the size of bird populations?
A) Keep walls covered with deciduous vegetation. B) Keep walls bare of vegetation. C) Keep walls covered with evergreen vegetation. D) Keep walls covered with vegetation in the summer only. E) Keep walls covered with vegetation in the winter only.
Which of the following are the products of the reaction of a metallic oxide with an acid?
A) a metallic ion + H2(g) B) a metallic ion + H2O(l) C) solid metal + H2(g) D) solid metal + H2O(g)
What is the characteristic of water molecules that gives water a “sticky” quality?
A. hydrogen bonding B. strong polarity C. covalent bonding D. liquidity E. surface tension