Which type of organisms were likely the first land animals?
a. birds
b. reptiles
c. mammals
d. amphibians
e. arthropods
e
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Which of the following is least likely to be considered a mutualistic relationship?
a. Bacteria living in the roots of pea plants b. Bird nesting in a tree. c. Cyanobacteria living inside of an eukaryotic cell. d. Clownfish living in the tentacles of an anemone. e. Fungi living in the roots of plants.
When light rays converge behind the retina, it is known as ____
a. astigmatism b. color blindness c. nearsightedness d. macular degeneration
e. farsightednessPolysaccharides are composed of thousands of monosaccharides arranged in straight or branched chains.
a. true b. false
Modern conservation science increasingly aims at ________
A) protecting federally listed endangered species B) countering pollution C) sustaining entire ecosystems D) maintaining genetic diversity within species