characteristics that identify a species as a keystone species
What will be an ideal response?
species that impacts its community more than the abundance it would suggest
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Fossils are remains or traces of prehistoric life that have been preserved in rocks of Earth's crust. Indicate whether the statement is true or false
Wave-formed ripple marks ____
A)tend to have symmetrical profiles B)are good indicators of ancient current directions C)have a gentle slope and a steep slope D)form in undisturbed deep-sea sedimentary environments E)form when clay-rich sediment dries and shrinks
With few exceptions, inorganic compounds do not have
A) carbon-hydrogen bonds or carbon-carbon bonds. B) nitrogen-oxygen bonds or carbon-oxygen bonds. C) hydrogen-nitrogen bonds or carbon-oxygen bonds. D) potassium-sodium bonds or hydrogen-chlorine bonds.
Use a diagram to help explain the relationships among ecosystems, communities, and species
What will be an ideal response?