0:00:02 > 0:00:04It's Our Planet!
0:00:35 > 0:00:38It's Our Planet!
0:00:43 > 0:00:46Through the year, the weather changes.
0:00:46 > 0:00:49And as it changes, so do the seasons.
0:00:52 > 0:00:56As the weather gets warmer, any snow and ice left over
0:00:56 > 0:00:59from winter soon melts.
0:00:59 > 0:01:02Plants and animals know that spring has arrived.
0:01:06 > 0:01:09These flowers look as white as snow.
0:01:09 > 0:01:11That's why they're called snowdrops.
0:01:13 > 0:01:16And daffodils are spring plants too.
0:01:17 > 0:01:21And bluebells cover the floors of the woods.
0:01:21 > 0:01:26Spring is the season when everything starts to grow.
0:01:26 > 0:01:29Trees start to get their leaves.
0:01:32 > 0:01:36And birds start to sing to let everyone know
0:01:36 > 0:01:39that spring has arrived.
0:01:42 > 0:01:46In the summer, the weather turns very warm.
0:01:46 > 0:01:49It still rains in summer, but not as much as in spring.
0:01:53 > 0:01:58The fields are full of crops like wheat or corn, which we can eat.
0:01:58 > 0:02:02This is harvested by the farmers at the end of the summer.
0:02:03 > 0:02:08Autumn can be warm as well but it can also be wet.
0:02:12 > 0:02:15The rain soon soaks everything right through,
0:02:15 > 0:02:18even after a long dry summer.
0:02:21 > 0:02:26These are toadstools and they love the warm wet weather
0:02:26 > 0:02:29and come up in woods and forests all over the place.
0:02:33 > 0:02:35Lots of fruit and vegetables
0:02:35 > 0:02:39ripen in autumn before the weather gets cold again.
0:02:43 > 0:02:46Autumn is a time for gathering the harvest,
0:02:46 > 0:02:49to get through the colder weather.
0:02:51 > 0:02:54Conkers ripen around this time as well.
0:02:54 > 0:02:58And you might be able to find some under a horse chestnut tree.
0:03:00 > 0:03:04At the end of autumn, the weather starts to turn cooler,
0:03:04 > 0:03:07and it can be quite stormy.
0:03:11 > 0:03:16As it turns cold, trees change colour and leaves start to fall.
0:03:18 > 0:03:22Animals like squirrels bury nuts in a safe place to have enough food
0:03:22 > 0:03:25to get them through the winter.
0:03:25 > 0:03:29Soon the frost
0:03:29 > 0:03:31and the mist appear again.
0:03:44 > 0:03:47Some animals don't mind when the snow returns.
0:03:50 > 0:03:54A warm coat of fur or wool can keep them warm through the winter.
0:03:57 > 0:04:01Soon, the weather will get warmer and the seasons will start
0:04:01 > 0:04:03all over again.
0:04:04 > 0:04:08It's Our Planet!
0:04:09 > 0:04:13Boing, boing, boing. I'm a bouncing rabbit.
0:04:13 > 0:04:14Boing, boing, boing.
0:04:16 > 0:04:18I'm a tall giraffe.
0:04:20 > 0:04:22Can you be an animal too?
0:04:22 > 0:04:24Boing, boing, boing.
0:04:24 > 0:04:27I'm a bouncing rabbit. Boing, boing, boing.
0:04:30 > 0:04:32I'm a tall giraffe.
0:04:34 > 0:04:36What animal is this?
0:04:40 > 0:04:42It's a blackbird.
0:04:44 > 0:04:47And what's Tom?
0:04:47 > 0:04:50He's a lion.
0:04:55 > 0:04:58It's Our Planet!
0:04:58 > 0:05:01There are more creatures for you to see.
0:05:03 > 0:05:06Have you seen a frog before?
0:05:06 > 0:05:09You might have seen one in gardens or ponds.
0:05:13 > 0:05:16But it might not have been a frog.
0:05:17 > 0:05:19They're smooth-skinned.
0:05:19 > 0:05:23It might have been a toad.
0:05:23 > 0:05:26Toads have lumps and bumps.
0:05:32 > 0:05:34Which is this?
0:05:34 > 0:05:36A frog or a toad?
0:05:38 > 0:05:41It's a frog!
0:05:41 > 0:05:43And here are lots of its friends.
0:05:48 > 0:05:52In the spring, frogs and toads lay their eggs.
0:05:54 > 0:06:00Frogs lay their eggs in clumps of jelly called frogspawn.
0:06:07 > 0:06:11Toads lay their eggs in long strings of jelly.
0:06:21 > 0:06:26Both frogs' eggs and toads' eggs grow up into tadpoles.
0:06:37 > 0:06:39If you watch them everyday,
0:06:39 > 0:06:44they grow and grow as they eat up plants in the bottom of the pond.
0:06:48 > 0:06:54And when they're big enough, something amazing happens.
0:06:54 > 0:06:58First, they grow arms in the front of their bodies.
0:07:01 > 0:07:05Then, they grow legs on the backs of their bodies.
0:07:08 > 0:07:11Their heads change shape.
0:07:14 > 0:07:19And then, their tail slowly shrinks until it disappears.
0:07:25 > 0:07:28And before you know it, they're froglets!
0:07:31 > 0:07:35Frogs come in all different shapes
0:07:35 > 0:07:37and sizes.
0:07:48 > 0:07:51Some frogs from other countries are very colourful.
0:07:51 > 0:07:55But this can also mean that they're poisonous.
0:08:04 > 0:08:07Some frogs like to croak a lot.
0:08:12 > 0:08:14CROAKING
0:08:17 > 0:08:20It lets other frogs know they're close by.
0:08:33 > 0:08:38Frogs are just as happy on land as they are in the water.
0:08:38 > 0:08:41This means they're amphibious.
0:08:44 > 0:08:48The next time you're near a pond, have a look and see if you can spot
0:08:48 > 0:08:51any tadpoles or frogs.
0:08:58 > 0:09:01It's Our Planet!
0:09:03 > 0:09:06Subtitles by Red Bee Media Ltd 2006
0:09:06 > 0:09:08E-mail: subtitling@bbc.co.uk