Blue－greenalgaegrowabundantlyinsaltmarshes.
A、primarilyWhencarbonisaddedtoironintheproperproportions,theresultissteel.
Someanimalspantandsweattospeedevaporationofbodymoistureandthuscoolthemselves.
DoubleEagleinthefirsttransatlanticballoon,wasgreetedbyavidcrowdsinFrance.
Eyespots,themostrudimentaryeyes,arefoundinprotozoan原生动物flagellates鞭毛虫,flatworms扁形虫,andsegmentedworms片段蠕虫.
TheeconomyofDallas,Texas,isstronganddiversified.
