Because there would not have been any significant soil before significant establishment of life-forms on land, the earliest eukaryotic life-forms on land most likely were:
A) plant—fungi combinations. B) animals.
C) fungi. D) plant—animal combinations.
Answer: A
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Which event endangers far more species than the destruction of a comparable area elsewhere?
a. deforestation of temperate deciduous b. desertification of grasslands c. deforestation of taiga d. desertification of savannah e. deforestation in tropical rainforest biomes
What component of the cell is the site of polypeptide assembly?
a. nucleus b. mitochondria c. vesicles d. ribosome e. lysosome
Answer the following statement(s) true (T) or false (F)
1. Ultimately all organisms are dependant on photosynthesis for their food. 2. Recent scientific data shows that an increase in atmospheric carbon dioxide levels leads to an increase in photosynthesis and therefore an increase in food production. 3. Being very specific, the actual end product of photosynthesis is RuBisCO.
CaCl2 is a salt that forms as the result of what type of bond?
A. nonpolar B. ionic C. covalent D. hydrogen E. polar