Coccolithophores are able to utilize more frequencies of light so they can be deeper in the euphotic
zone and need less light. Indicate whether the statement is true or false.
ANS: F
Coccolithophores are found at the surface in brightly lighted areas. Their coccolith coverings may
provide protection from getting too much light. Information can be found in the section Most
Phytoplankton are Photosynthetic Autotrophs.
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A bullet is dropped into a river from a very high bridge. At the same time, another bullet is fired from a gun, straight down towards the water. Neglecting air resistance, the acceleration just before striking the water
A) is greater for the dropped bullet. B) is greater for the fired bullet. C) is the same for each bullet. D) depends on how high they started. E) none of the above
Which of the following apply to Greenland and Antarctica?
a. alpine glacier b. ice field c. ice cap d. piedmont e. continental ice sheet
Which of the following is not responsible for the slow recovery of ecosystems from desertification?
a. slight rainfall b. low species diversity c. little soil bacterial activity d. slow plant growth rates e. frequent flash floods
Most folding of rocks occurs near the surface. Indicate whether the statement is true or false