The most likely time for an ordinary call thunderstorm to form is
a. just after sunrise
b. just before sunrise
c. around midnight
d. late afternoon
e. at noon
d
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Which of the following elements will most likely be shiny and flexible?
A) rhodium (Rh) B) hydrogen (H) C) selenium (Se) D) iodine (I) E) silicon (Si)
A ________ is barren desert surface of exposed bedrock which also can be made of sedimentary material that has been evaporated by salts evaporated from groundwater
Fill in the blank(s) with the appropriate word(s).
In conservation land trusts, property owners agree to protect their land from development or other harmful environmental activities, often in return for tax breaks on the land's value.
Answer the following statement true (T) or false (F)
Genes for natural pesticides that are toxic to potato bugs have recently been transferred into potato plants making the plants lethal to these bugs. A main concern is that
A. natural selection will rapidly produce strains of potato bugs that are immune to the toxin in the plant. B. the cost to farmers will exceed the benefits. C. these genes will mutate to become lethal to the potato plants that contain them. D. these genes will escape from potatoes and disrupt other natural ecosystem functions.