What is the cultivation of aquatic organisms for food called?
a. monoculture
b. marine tilling
c. marine harvesting
d. aquaculture
e. sea reaping
d
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Given that precipitation can be accurately measured at surface weather stations, explain why it is desirable to measure rainfall from space
What will be an ideal response?
The weak Sun paradox concerns
A) why solar output is currently so low. B) how life evolved on Earth, given that the Sun does not put out as much energy as many other stars. C) why the temperature of the Earth was as high as it was during the Earth's first billion years. D) the impact of the Maunder Minimum on current climate. E) none of the above
The pressure remaining in a water distribution system when water is flowing is the _____ pressure.
a. residual b. flow c. operating d. static
Philip Levin, Donald Levin and other biologist have cautioned us that speciation rates can increase for opportunistic species such as
a. Fish b. Birds c. reptiles and birds d. birds and weeds e. weeds, rodents and cockroaches