When the concentration of a reactant is increased which of the following is true?
A) The rate of reaction always decreases.
B) The rate of reaction usually decreases.
C) The rate of reaction always increases.
D) The rate of reaction usually increases.
D
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In what way is color an indicator of soil drainage?
A) Well-drained soils tend to be well aerated and red in color. B) Poorly drained soils tend to be well oxidized and red in color. C) Moderately drained soils tend to be green in color. D) Colors of soils are more reflective of organic matter than of drainage.
Differentiation refers to the process in which the earth:
a. accreted from smaller terrestrial bodies b. was bombarded by frequent meteorite collisions c. became chemically segregated due to melting and sinking of iron d. became a separate and distinct planetary body along with the other terrestrial planets
____________________ humidity is expressed as a percentage of saturation
Fill in the blank(s) with correct word
Summarize and discuss the fossil evidence indicating that eukaryotic cells appeared as much as
1.2 billion years ago. Give examples of some of these early eukaryotic organisms. What will be an ideal response?