All living organisms, regardless of their unique identity, have certain biological, chemical, and physical characteristics in common.
A、asaresultofD
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Eyespots,themostrudimentaryeyes,arefoundinprotozoan原生動(dòng)物flagellates鞭毛蟲,flatworms扁形蟲,andsegmentedworms片段蠕蟲.
Alligatorsstillexistinsomeofthedank潮濕swampsandbayous小海灣ofAlabama'scoastalregions.
Withtheacquisitionofsmallercompaniesbylargerones,the1960'ssawawaveofnewconglomerates.
Peoplewhodonotsleepenoughtendtobecomeirritable.
Insectpestsareamongtheleadingcausesofcropfailure.
