Which of the following can cause enzyme activity to either increase or decrease?
A) increasing the substrate concentration
B) changing the pH
C) both a and b
D) neither a nor b
B
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How does lava differ from magma? What will be an ideal response?
Is the process of partial melting more likely to produce magmas that are more mafic or more felsic?
Why? What will be an ideal response?
Hydrocarbons
A) typically contain other elements besides carbon and hydrogen. B) occur only in particulate forms. C) are released into the atmosphere primarily through natural processes. D) cause substantial health problems in cities with high levels of air pollution.
What was NOT a feature of the Industrial Revolution?
A) Workers often labored for more than 10 hours a day. B) Child labor was often used. C) Time became a commodity. D) Workers organized into labor unions. E) Conflict between classes was minimized.