A. That's the way they're built. Most cacti come from areas of hot weather with low rainfall, so they've had to develop. Q. Specifically A. For a start, the spines. They have several uses: they
00:00 Mon 23rd Jul 2001A. Yes - up to a point. The real name for the so-called killer bee is the Africanised bee. The folklore of the killer bee started with such films as The Swarm, where great clouds of angry bees
00:00 Mon 23rd Jul 2001A. Skunks use chemicals called thiols to create a potent smell that repels attack from potential predators. To say it smells bad is an understatement. However, skunks get a bad press: They're not
00:00 Mon 23rd Jul 2001 A. Why indeed It's a great Hispanic tradition that's both exciting and colourful. It's also sadistic. More than 10,000 bulls are tortured and killed each year in Europe's bullrings. The season is
00:00 Thu 19th Jul 2001The killer from the deep A. Simple. They're killing machines. They hunt for food. It's the same reason that your domestic moggy catches sparrows. That's what they were made to do. The most
00:00 Thu 19th Jul 2001 A. Thanks to Henryn for the question. Flamingos are filter feeders, living off algae and tiny animals that live in the mud. These include shrimps, molluscs and insect larvae and contain pigments
00:00 Thu 19th Jul 2001A. The answer depends upon what type of feather you're talking about: birds have lots more feathers than the ones you can see. Generally speaking the bigger the bird the greater the number of
00:00 Mon 09th Jul 2001A. Not strictly speaking, not in the same way that primates do. Their extra 'thumb' is actually an elongated wrist bone on their front paws, which is used for gripping the slender shoots of bamboo,
00:00 Mon 09th Jul 2001A. Through erosion. Rainwater dissolves minerals in the soil and rock that it passes through, carrying them until it reaches a stream or river. Eventually this water will flow into the sea taking
00:00 Mon 09th Jul 2001A. Geological evidence is one of the factors that suggests that all the currently separate continents formed one large land mass called Pangaea. However, the geological processes that shape the
00:00 Mon 02nd Jul 2001A. Because denser air near the earth's surface causes light to diffract, sometimes presenting a distorted flattened image of the sun. Q. Why are there differences in the earth's atmosphere A.
00:00 Mon 02nd Jul 2001A. Generally your circulatory system adapts to whatever position you are in and the heart, arteries, and veins all work to move the blood through the circulatory system in one direction. Bats do
00:00 Mon 02nd Jul 2001 A. Yes, the horseshoe crab does. Q. What gives blood its colour A. The colour of blood is determined by its respiratory pigments, which carry oxygen and their metallic content. The pigments,
00:00 Mon 25th Jun 2001 A. As we have now passed Midsummer's Day the AnswerBank takes a look at what wildlife you can expect to see during this season. Q. What flowers can I expect to see in summer A. The pink and
00:00 Mon 25th Jun 2001 A. The most sort after sapphires are the blue variety, especially those from Burma and Kashmir, which are closest to the pure spectral blue. However natural white sapphires are becoming rare
00:00 Mon 25th Jun 2001A. Saturn was considered unique because of its famous rings up until 1977, when it was discovered that Uranus, Jupiter and Neptune all have faint rings also. Q. Where did Saturn's rings come
00:00 Mon 18th Jun 2001Asks djtaz11398. This question can have two meanings, so let's deal with each separately. Q. When a chicken is developing, which comes first, the egg or the chick A. The egg, or constituents
00:00 Mon 18th Jun 2001A. Morene is having problems keeping mosquitoes away from the garden pond, why Because mosquitoes need water to breed: the female mosquito lays her eggs in the water. Mosquitos especially like
00:00 Mon 18th Jun 2001A. The flower, Titan arum, is a carrion flower. Carrion flowers mimic the smell a rotting corpse in order to attract flesh and faecal loving insects. These insects, which are the most common
00:00 Mon 11th Jun 2001A. Sabrianh asked recently why, as they’re both composed mainly from carbon, is diamond the hardest known surface while graphite is so soft The answer lies in the bonding structure of their
00:00 Mon 11th Jun 2001
