Phil tosses a ball horizontally from a rooftop at 10 m/s. One second after leaving his hand the velocity of the ball is about
A. 5 m/s.
B. 10 m/s.
C. 20 m/s.
D. 14 m/s.
Answer: D
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Mafic magmas tend to flow ___
a) at the same rate as silicic magmas b) much faster than silicic magmas c) much slower than silicic magmas d) faster or slower than silicic magmas depending on the volcano e) not enough information has been provided to answer the question
What do scientists think might form the "stepping stones" that would enable organisms to disperse from one seafloor vent to another??
A) ?high spots on the seafloor that extend into the photic zone B) ?whale carcasses C) ?coral reefs D) ?large fish that swim from vent to vent
Because human population is becoming quite large, the doubling time for population has decreased
Indicate whether the statement is true or false
What organism provides pollinator ecosystem services?
a. Bees b. Birds c. Bats d. All are pollinators