I DO get nervous, when people say the deep oceans are at 4 deg C. I know that is common for
deep fresh water lakes; as a result of the 4 deg C maximum density of fresh water; but salt water does not have a maximum density short of freezing; at least for the levels of salinity in the oceans.
There could be three evolutionary processes could explain this adaptive radiation of hominins: 1) the occupation of novel niches for species living in a highly productive but spatially constrained region when there are
deep fresh water lakes in the EARS [46] and 2) the lakes themselves creating spatial structure producing population isolation and vicariance and 3) repeated periods of increased resource availability stimulated adaptation and radiation followed by periods of environmental stress when the lakes rapidly dried up imposing strong selection pressures [28].
Nasty pollutants pouring into the world's
deepest and oldest
lake from a pulp and paper mill are putting Russia's Lake Baikal — which holds one fifth of the world's fresh water — at risk of being dropped off the United Nations» World Heritage List.Ecologists say more than half of the ecosystem of the lake, which was awarded World Heritage Site status in 1996, is affected by the paper m
lake from a pulp and paper mill are putting Russia's
Lake Baikal — which holds one fifth of the world's fresh water — at risk of being dropped off the United Nations» World Heritage List.Ecologists say more than half of the ecosystem of the lake, which was awarded World Heritage Site status in 1996, is affected by the paper m
Lake Baikal — which holds one fifth of the world's
fresh water — at risk of being dropped off the United Nations» World Heritage List.Ecologists say more than half of the ecosystem of the
lake, which was awarded World Heritage Site status in 1996, is affected by the paper m
lake, which was awarded World Heritage Site status in 1996, is affected by the paper mill.