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4 " Ocean Acidification is sometimes referred to as Global Warming's Equally Evil Twin. The irony is intentional and fair enough as far as it goes... No single mechanism explains all the mass extinctions in the record and yet changes in ocean chemistry seem to be a pretty good predictor. Ocean Acidification played a role in at least 2 of the Big Five Extinctions: the End-Permian and the End-Triassic. And quite possibly it was a major factor in a third, the End-Cretaceous. ...Why is ocean acidification so dangerous? The question is tough to answer only because the list of reasons is so long. Depending on how tightly organisms are able to regulate their internal chemistry, acidification may affect such basic processes as metabolism, enzyme activity, and protein function. Because it will change the makeup of microbial communities, it will alter the availability of key nutrients, like iron and nitrogen. For similar reasons, it will change the amount of light that passes through the water, and for somewhat different reasons, it will alter the way sound propagates. (In general, acidification is expected to make the seas noisier.) It seems likely to promote the growth of toxic algae. It will impact photosynthesis—many plant species are apt to benefit from elevated CO2 levels—and it will alter the compounds formed by dissolved metals, in some cases in ways that could be poisonous.

Of the myriad possible impacts, probably the most significant involves the group of creatures known as calcifiers. (The term calcifier applies to any organism that builds a shell or external skeleton or, in the case of plants, a kind of internal scaffolding out of the mineral calcium carbonate.)...

Ocean acidification increases the cost of calcification by reducing the number of carbonate ions available to organisms that build shells or exoskeletons. Imagine trying to build a house while someone keeps stealing your bricks. The more acidified the water, the greater the energy that’s required to complete the necessary steps. At a certain point, the water becomes positively corrosive, and solid calcium carbonate begins to dissolve. This is why the limpets that wander too close to the vents at Castello Aragonese end up with holes in their shells.

According to geologists who work in the area, the vents have been spewing carbon dioxide for at least several hundred years, maybe longer. Any mussel or barnacle or keel worm that can adapt to lower pH in a time frame of centuries presumably already would have done so. “You give them generations on generations to survive in these conditions, and yet they’re not there,” Hall-Spencer observed. "

Elizabeth Kolbert , The Sixth Extinction: An Unnatural History

5 " Can two walk together, unless they are agreed?’
Amos 3:3
‘Does This Person Belong in your Life?’
A toxic relationship is like a limb with gangrene: unless you amputate it the infection can spread and kill you. Without the courage to cut off what refuses to heal, you’ll end up losing a lot more. Your personal growth - and in some cases your healing - will only be expedited by establishing relationships with the right people. Maybe you’ve heard the story about the scorpion who asked the frog to carry him across the river because he couldn’t swim. ‘I’m afraid you’ll sting me,’ replied the frog. The scorpion smiled reassuringly and said, ‘Of course I won’t. If I did that we’d both drown!’ So the frog agreed, and the scorpion hopped on his back. Wouldn’t you know it: halfway across the river the scorpion stung him! As they began to sink the frog lamented, ‘You promised you wouldn’t sting me. Why’d you do it?’ The scorpion replied, ‘I can’t help it. It’s my nature!’ Until God changes the other person’s nature, they have the power to affect and infect you. For example, when you feel passionately about something but others don’t, it’s like trying to dance a foxtrot with someone who only knows how to waltz. You picked the wrong dance partner! Don’t get tied up with someone who doesn’t share your values and God-given goals. Some issues can be corrected through counselling, prayer, teaching, and leadership. But you can’t teach someone to care; if they don’t care they’ll pollute your environment, kill your productivity, and break your rhythm with constant complaints. That’s why it’s important to pray and ask God, ‘Does this person belong in my life? "

Patience Johnson