A general term referring to all biostratigraphic units such as range zones and concurrent rangezones:a
cast d. formation
b. mold e. system
c. biozone
C
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Which of the following is not an example of an age-relationship based on absolute dating?
A) The oldest known rocks on Earth are 3.96 billion years old. B) The Vishnu schist at the bottom of the Grand Canyon is 2 billion years old. C) The dinosaurs became extinct 65 million years ago. D) The Coconino formation in the Grand Canyon is older than the Kaibab formation.
A bird on a high-voltage wire isn't shocked because
A. of low conductivity. B. of high insulation. C. of high resistance between its feet. D. none of the above
Which of the following is an example of an abiotic factor?
A. the interactions between different species in a community B. the diversity of prey and predator species in a community C. the climate of the community in which the species mentioned above inhabit D. the number of individuals of a particular species living in a community
How do keystone species differ from indicator species?
What will be an ideal response?