Feed Me: Classifying Organisms - Crash Course Kids #1.2 - By Crash Course Kids
Transcript
| 00:09 | lunch is the best time of day . Right ? | |
| 00:11 | Well sometimes anyway , but even if lunch turns out | |
| 00:14 | to be nasty , like a banana and ketchup sandwich | |
| 00:18 | , if we're really hungry , we'll eat it . | |
| 00:20 | That's because we're living things and all living things need | |
| 00:23 | to eat or really need to eat to get energy | |
| 00:26 | in order to survive . But tigers and humans are | |
| 00:29 | both living things and you don't tend to see tigers | |
| 00:31 | hanging out at the salad bar . So what's the | |
| 00:33 | deal ? How do different types of living things get | |
| 00:36 | energy ? Well , everything starts with the sun . | |
| 00:40 | We may slather on the sunblock and pull out the | |
| 00:42 | shades when things get too bright , but plants don't | |
| 00:45 | . Instead they do something . Only a few kinds | |
| 00:47 | of living things can do . They catch energy that | |
| 00:50 | comes from the sun's rays and they change it into | |
| 00:52 | chemical energy , specifically a kind of sugar . Then | |
| 00:55 | other living things like humans eat the plants and use | |
| 00:58 | that sugar as energy in their own bodies . It's | |
| 01:01 | like swallowing sunshine , but much tastier and more filling | |
| 01:05 | . Scientists classify or group animals based on how they | |
| 01:09 | get energy . Some living things get energy by eating | |
| 01:12 | mostly plants or parts of plants , like fruits or | |
| 01:15 | seeds . These animals , like deer and cows , | |
| 01:17 | are called herbivores , even though they eat all kinds | |
| 01:20 | of plants , not just the herbs that go in | |
| 01:22 | pizza sauce , but if you're looking for an animal | |
| 01:25 | to split a burger or carne , asada taco with | |
| 01:27 | , you'll want to call tigers , hawks or other | |
| 01:30 | carnivores , animals that eat mostly meat , while humans | |
| 01:34 | bears , raccoons and other animals whose diets include both | |
| 01:37 | plants and animals are called omnivores . Now you can | |
| 01:41 | come up with a really simple model to see how | |
| 01:43 | these groups of living things fit together based on how | |
| 01:46 | they get energy . Say we're out for a walk | |
| 01:50 | , there's sun shining on an apple tree , a | |
| 01:52 | raccoon hiding in the trees branches , some insects munching | |
| 01:56 | on the trees , leaves and a hawk circling over | |
| 01:58 | a field nearby . How can you arrange these things | |
| 02:01 | in a way that shows how they get energy ? | |
| 02:03 | Well first we know that the apple tree doesn't really | |
| 02:06 | eat anything , it's a plant , so it can | |
| 02:08 | take the sun's energy shining on its leaves plus some | |
| 02:11 | air and water and make sugar . So what about | |
| 02:13 | the animals in this scene ? Since the insects are | |
| 02:15 | making a salad out of the trees , leaves , | |
| 02:17 | it's safe to guess that they're herbivores Plant eaters , | |
| 02:20 | The raccoon would be happy eating either the apples from | |
| 02:22 | the tree or the insects , since it eats both | |
| 02:25 | plants and other animals , it's the Omnivore in this | |
| 02:28 | situation , if the raccoon leaves the safety of the | |
| 02:31 | tree , it might get picked off by that hawk | |
| 02:33 | , a meat loving carnivore . So as you can | |
| 02:38 | see , all living things get energy that starts off | |
| 02:41 | with the sun . Plants take this energy and change | |
| 02:43 | it into chemical energy . Some animals herbivores get their | |
| 02:47 | energy by eating mostly plants , while others the carnivores | |
| 02:51 | get it by eating mostly meat and omnivores , like | |
| 02:54 | humans , get their energy by eating both plants and | |
| 02:57 | animals . Now , if you'll excuse me , it's | |
| 02:59 | time for this omnivores lunch . |
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