There are about 20,000 known species of bee, in 9 recognized families.

Colonies of honey bees are long-lasting and may live for many years. The population of a healthy colony in mid-summer can average between 40,000 and 80,000 bees.

The male bees – drones – do not have stingers, and do not forage for nectar or pollen. Their only role is to fertilize a new queen. They die immediately after mating as this process requires from them a fatally convulsive effort. The drones are turned outside in autumn to die since their reproductive role is over.

Queen bee is an adult, fully sexually developed female, the mother of all the bees in the hive. The queens are developed from larvae selected by worker bees and fed only on royal jelly, a substance secreted by the workers that is high in protein, in order to become sexually mature. Adult queens are overweight and unable to fly. The average lifespan of the queen is three to four years.

Garlic is a member of the onion family that has been used throughout the history of many cultures for both culinary and medicinal purposes. It is believed that garlic originates from Central Asia.

Garlic is known for its distinctive odor, and researches believe that this odor evolved as a defensive mechanism to protect the plant from birds, insects, and worms. Garlic is sometimes grown among flowers or vegetables to protect them from being attacked by pests.

Garlic emits sharp flavor only when it is broken by chopping, chewing, or crushing, due to the chemicals created when the plant's cells are damaged. When eaten in considerable quantity, garlic may be strongly evident for up to about 8 hours in both the eater’s breath and sweat. This is because garlic's strong smelling sulfur compounds are metabolized forming allyl methyl sulfide that cannot be digested and is passed into the blood.

Moles are members of the Talpidae family divided into three subfamilies than include desmans, moles, and shrew moles.

Moles live in the underground tunnels. They dig actively, and can create a tunnel of up to 20m per day.

Female moles produce litter of up to seven (but usually 3-4) youngs in the summer.

Front limbs of European moles are spade-like with sharp claws, while their hind limbs are small and underdeveloped. The moles live up to three years, feeding mostly on earthworms. They also eat other invertebrates, small snakes and lizards.

Contrary to the popular belief, the moles are not blind. They have eyes and ears, but very small ones so they do not get filled with earth when mole is digging.

The first fully-documented human blood transfusion was performed by Dr. Jean-Baptiste Denys in 1667. He transfused the blood of a sheep to a boy, who later died. Denys was accused of murder, blood transfusions were prohibited in France for next 150 years.

In 1818, British obstetrician and surgeon James Blundell performed the first successful transfusion of human blood to his patient. He performed later 10 transfusions, 5 of which were successful, and invented various transfusion instruments.

In 1901 Austrian biologist and physician Karl Landsteiner developed the system of classification of blood groups for which he was given the Nobel Prize for Physiology or Medicine in 1930. This discovery explained why many previous transfusions were unsuccessful.

In 1914 Russian physician Vadim Yurevich and Belgian doctor Albert Hustin used sodium citrate as an anticoagulant thus opening the way for blood banks.

The word "snake" originates from Proto-Indo-European (language believed to have been spoken about 4000 BC) "snag- (sneg-)" which means "to crawl, creeping thing".

There are about 2,700 species of snakes, of these 375 are venomous (with about 250 able to kill a human). It is estimated that lightning kills more people than snake venom.

Snakes are found in many habitats including in the water, forests, deserts and prairies, but most snakes are found in tropical regions.

A land snake considered by many herpetologists (specialist dealing with reptiles and amphibians) to be the most venomous is the inland taipan (also known as the Inland Taipan). Its bite can contain enough venom to kill 200,000 mice (or 100 adult humans).