Problem: Hemimetabolous insects, those with incomplete metamorphosis, change gradually by undergoing a series of molts. An insect molts when it outgrows its exoskeleton, which does not stretch and would otherwise restrict the insect's growth. The molting process begins as the insect's epidermis secretes a new epicuticle inside the old one. After this new epicuticle is secreted, the epidermis releases a mixture of enzymes that digests the endocuticle and thus detaches the old cuticle. When this stage is complete, the insect makes its body swell by taking in a large quantity of water or air, which makes the old cuticle split along predefined weaknesses where the old exocuticle was thinnest.:142
Do hemimetabolous insects change quickly or gradually?
The answer is the following: gradually

Problem: Every year a "Brotherhood and Unity" relay race is organized in Montenegro, Macedonia and Serbia which ends at the "House of Flowers" in Belgrade on May 25 the final resting place of Tito. At the same time, runners in Slovenia, Croatia and Bosnia and Herzegovina set off for Kumrovec, Tito's birthplace in northern Croatia. The relay is a left-over from Yugoslav times, when young people made a similar yearly trek on foot through Yugoslavia that ended in Belgrade with a massive celebration.
How often is the "Brotherhood and Unity" relay race done?
The answer is the following: Every year

Problem: Since the 16th century, the city has had a bear pit, the Barengraben, at the far end of the Nydeggbrucke to house its heraldic animals. The currently four bears are now kept in an open-air enclosure nearby, and two other young bears, a present by the Russian president, are kept in Dahlholzli zoo.
What zoo are the bears of Bern kept?
The answer is the following: Dahlholzli zoo

Problem: GE has a history of some of its activities giving rise to large-scale air and water pollution. Based on year 2000 data, researchers at the Political Economy Research Institute listed the corporation as the fourth-largest corporate producer of air pollution in the United States, with more than 4.4 million pounds per year (2,000 tons) of toxic chemicals released into the air. GE has also been implicated in the creation of toxic waste. According to EPA documents, only the United States Government, Honeywell, and Chevron Corporation are responsible for producing more Superfund toxic waste sites.
Which two commercial businesses produce more Superfund toxic waste sites than GE?
The answer is the following:
Honeywell, and Chevron Corporation