What happened during the oxygen catastrophe?

The first mass extinction on earth occurred around 2.5 billion years ago, when a photosynthesizing bacterium appeared and released so much oxygen into the atmosphere that anaerobic life was largely wiped out. This is often called the Great Oxygenation Event, the Oxygen Catastrophe, or the Oxygen Holocaust. The appearance of free oxygen in the Earth’s … Read more

How does red oxide paint work?

Red oxide is used in paints and primers as a rust preventive. If traces of rust are present on an iron surface, red oxide paint will still adhere, because it interacts with the surface by forming chemical bonds. Red oxide primer is an anti-corrosion coating designed to stop rust formation. It can be applied directly … Read more

What country has zero waste?

As the result of an astonishing ‘recycling revolution’, Sweden has nearly reached ‘zero waste’ levels and imports at least two million tonnes of rubbish from other European countries. Zero Waste: The conservation of all resources by means of responsible production, consumption, reuse, and recovery of all products, packaging, and materials, without burning them, and without … Read more

What did Basquiat use to paint?

Basquiat uses spray paint, oil stick, and a house paint roller coated in blue paint. With jazz playing in the background you can’t help but think of the Hans Namuth film of Pollock painting on glass. He used acrylic, oil paint stick and spray paint on canvas, linen, metal and paper; and markers, paper collage, … Read more

How does attention affect the brain?

New research shows for the first time how visual attention affects activity in specific brain cells. The study shows that attention increases the efficiency of signaling into the brain’s cerebral cortex and boosts the ratio of signal over noise. Summary: Researchers have discovered a key mechanism in the brain that may underlie our ability to … Read more

What do on Boxing Day?

A ‘Christmas Box’ in Britain is a name for a Christmas present. Boxing Day was traditionally a day off for servants and the day when they received a ‘Christmas Box’ from the master. The servants would also go home on Boxing Day to give ‘Christmas Boxes’ to their families. The name is a reference to … Read more

Where can I test my alternator for free?

AutoZone will test your car’s parts for free. We can test your car’s battery*, alternator*, starter* and voltage regulator while they’re still on your car. We can also give your car a complete starting and charging systems test. You can also take your alternator, starter or battery into our store and we’ll test it. Check … Read more

What state was in the Cotton Kingdom?

Cotton and westward expansion By the middle of the 19th century, the Cotton Belt extended from Maryland to East Texas. The most intensive cotton production occurred in Georgia, Tennessee, Alabama, Arkansas and Mississippi, together with parts of Florida, Louisiana and Texas. Similarly, why did slavery expand in the Cotton Kingdom? Growing more cotton meant an … Read more

How does Dickens present Scrooge in Chapter 1?

Dickens vividly describes Ebenezer Scrooge by writing, Scrooge! a squeezing, wrenching, grasping, scraping, clutching, covetous, old sinner! Scrooge rejects his nephew’s offer to celebrate Christmas, threatens to fire his employee, and dismisses the two gentlemen collecting holiday donations to the poor. In the first chapter Dickens introduces Scrooge and he is the main character of … Read more