seasonal slack
41Thermocline — Aquatic layers Pelagic    Photic       Epipelagic …
42Cable ferry — Coin operated cable ferry at Espevær in Bømlo, Norway A cable ferry is guided and in many cases propelled across a river or other larger body of water by cables connected to both shores. They are also called chain ferries, floating bridges, or… …
43Plant physiology — is a subdiscipline of botany concerned with the function, or physiology, of plants.Salisbury, Frank B. Cleon W. Ross, 1992. Plant physiology , 4th ed. (Belmont, California: Wadsworth Publishing). ISBN 0 534 15162 0] Closely related fields include …
44Dynorphin — protein Name=prodynorphin caption= width= HGNCid=8820 Symbol=PDYN AltSymbols= EntrezGene=5173 OMIM=131340 RefSeq=NM 024411 UniProt=P01213 PDB= ECnumber= Chromosome=20 Arm=p Band=ter LocusSupplementaryData= p12.2Dynorphins are a class of opioid… …
45Mound builder (people) — For other uses, see Mound builder (disambiguation). Monks Mound, located at the Cahokia Mounds UNESCO World Heritage Site near Collinsville, Illinois, is the largest Pre Columbian earthwork in America north of Mesoamerica …
46Paulins Kill — Geobox River name = Paulins Kill native name = other name = other name1 = image size = 300 image caption = The Paulins Kill near Blairstown, in Warren County, New Jersey. country = United States country1 = state = New Jersey state1 = region type …
47Mixtec transnational migration — Mixtec transnational migration, mainly to the United States has continued for over three generations. Nevertheless, the Mixtec have remained an autonomous community; indeed, they remain one of the last autonomous Mesoamerican indigenous groups.… …
48Post-concussion syndrome — Classification and external resources ICD 10 F07.2 ICD 9 310.2 …
49Deep sea — zones For the IMAX film, see Deep Sea 3D. The deep sea, or deep layer[1], is the lowest layer in the ocean, existing below the thermocline and above the seabed, at a depth of 1000 fathoms …
50Solar tracker — A solar tracker is a device for orienting a solar photovoltaic panel or concentrating solar reflector or lens toward the sun. The sun s position in the sky varies both with the seasons (elevation) and time of day as the sun moves across the sky.… …
