__________ is a set of methods that allow us to reconstruct phylogeny. Fill in the blank(s) with the appropriate word(s)
ANSWER: Cladistics
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Based on the experiment in the figure above, which of the following are plausible reasons for the result?
I) No nutrients evaporate now that vegetation is absent. II) Nutrients dissolve in the water running through the watershed. III) Nutrients are attached to small particles of sand or clay that leave the watershed. IV) Plant roots that held soil particles in place are no longer there. A) only I and III B) only II and IV C) only I, II, and IV D) only II, III, and IV E) only I, II, and III
The innermost membrane layer surrounding the brain and spinal column is the:
a. dura mater. b. meninges. c. arachnoid. d. pia mater.
The standing crop biomass is the ____
a. amount of sunlight absorbed by the plants b. amount of water accumulated per acre of crop plants c. total dry weight of plants at a given time d. number of plant species present e. productivity of the plants
Foraminifera help the sea to absorb more carbon dioxide from the air by:
a. photosynthesis b. incorporating it into their calcium carbonate shells c. incorporating it into their silica shells d. storing it in their gas filled vacuoles e. digesting photosynthetic plankton species