The high concentration of iridium at the Cretaceous Tertiary boundary may be attributable to
A. an out flux of iridium from Earth's interior.
B. meteorite bombardment.
C. a worldwide rise in sea level.
D. none of the above
Answer: B
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The geologic time scale was initially put together by ____
A)radiometric dating and correlation B)superposition, fossil succession and correlation C)lithostratigraphy and biostratigraphy D)carbon-14 age dating and lithostratigraphy E)geologists in the United States
Which of the following best describes integrated pest management (IPM)?
A) continuous monoculture cropping and harvesting B) biocontrol measures, crop rotation, and habitat diversification C) major reliance on synthetic pesticides D) transgenic crops E) subsidies for pesticide use
Which of the following is true when comparing MRI with X-ray imaging?
A) Both techniques are equally useful to image soft tissue. B) Both techniques are equally useful to image hard tissue. C) MRI is useful in imaging soft tissue and X-ray imaging is useful for imaging hard tissue. D) MRI is useful in imaging hard tissue and X-ray imaging is useful for imaging soft tissue.
Remote sensing is used quite heavily by large farmers, as they use this technology to help them determine when and where to water and fertilize their fields
Indicate whether the statement is true or false