parts of bryophyte
swimming sperm
vascular tissue
pollen
seeds
flowers
fruits
swimming sperm
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What is Disconformity?
a. The strata below were tiled or folded before the unconformity developed b. Sedimentary rocks overlie basement (typically consisting of igneous and/or metamorphic rocks) c. An unconformity parallel to the two sedimentary sequences it separates d. An unconformity due to cross cutting beds
The lower snowline of the past meant that
A) glaciers existed at lower altitudes. B) there were fewer glaciers. C) there were glaciers at lower latitudes. D) on average, there was less snow than there is today.
The Russian land mass is so large that it actually spans unbroken across eleven time zones
Indicate whether the statement is true or false
Hazardous substances ________ while toxins are ________.
A. Are poisonous substances; also poisonous substances B. Are usually of concern at all concentrations; dangerous substances C. React with specific cell components to kill cells; poisonous substances D. Are dangerous substances; poisonous substances E. None of the above is correct