sunstroke/hypoxia

The Devonian Frasnian-Famennian (F-F) boundary marks one of the five main extinction intervals of the Phanerozoic Aeon. This time was characterized by two pulses of oceanic anoxia, named the Lower and Upper Kellwasser events, during which massive marine biodiversity losses occurred. This paper

The analysis of the results of our own researches and literature data allows us to single out two basic stages in the mechanism of human adaptation to the conditions of the North. They both are connected with circannual chronorhythm: 1) adaptation to decrease of daylight and ambient temperature: 2)

The amphibious clingfish Sicyases sanguineus attaches by means of its ventral sucker to vertical surfaces of large exposed rocks splashed by the cool and heavy surf of Chile and southern Perú. Although adult and halfgrown fish tolerate diluted seawater and can survive at least a few hours in warm