1 00:00:00,000 --> 00:00:18,880 Hello Ranger Cortez. Hi Kaylee. Dr. D said you might be coming over for a visit today. 2 00:00:18,880 --> 00:00:23,360 What can I help you out with? I'm concerned about the fish in the bay. No one has caught 3 00:00:23,360 --> 00:00:27,960 any for a long time. I'm trying to figure out what's happened to them. Well what do 4 00:00:27,960 --> 00:00:32,040 you think happened to them? I think it might be because they don't have enough food to 5 00:00:32,040 --> 00:00:35,920 eat. That's possible. Have you checked to see if anything happened to disrupt the food 6 00:00:35,920 --> 00:00:41,000 web? What's a food web? Organisms that live together in an area are called a community. 7 00:00:41,000 --> 00:00:45,640 Members of the community depend on each other for survival. This dependence is called the 8 00:00:45,640 --> 00:00:51,120 food web. How do they depend on each other? In a typical community you'll find producers, 9 00:00:51,160 --> 00:00:57,560 consumers, and decomposers. Plants and algae are producers. They take the energy from life 10 00:00:57,560 --> 00:01:04,320 and use that to convert carbon dioxide, water, and minerals into food. This process is called 11 00:01:04,320 --> 00:01:09,560 photosynthesis. What are consumers? Organisms that eat other organisms are called consumers. 12 00:01:09,560 --> 00:01:14,040 There are three different kinds of consumers. Do you know what they are? I think that one is 13 00:01:14,040 --> 00:01:19,280 a herbivore. They eat plants. And one is a carnivore. They eat other animals. That's right. 14 00:01:19,400 --> 00:01:24,160 And an omnivore is a consumer that eats both plants and animals. I guess that makes me an 15 00:01:24,160 --> 00:01:29,480 omnivore. You can see how they all depend on each other. If plants didn't exist, the herbivores 16 00:01:29,480 --> 00:01:33,520 would have nothing to eat and they would not survive. And if the herbivores didn't survive, 17 00:01:33,520 --> 00:01:37,400 then the carnivores wouldn't have anything to eat. That's right. You catch on quick. 18 00:01:37,400 --> 00:01:43,120 What are decomposers? In order for a community to be successful, there must be a way to return 19 00:01:43,120 --> 00:01:48,320 the minerals and other basic ingredients back to the producers. Decomposers do this. How do 20 00:01:48,320 --> 00:01:55,640 they do that? Decomposers, bacteria and fungi, feed on dead producers and consumers and convert 21 00:01:55,640 --> 00:02:00,680 them back to the basic materials needed by producers to grow and reproduce. It's a cycle. 22 00:02:00,680 --> 00:02:06,600 That's correct. Now what you might want to do is take a look at the ocean and see if there's 23 00:02:06,600 --> 00:02:11,560 anything that happened to disrupt the cycle of the food web. That's a great idea. Thanks. Oh, 24 00:02:11,560 --> 00:02:16,480 by the way, would you mind taking a couple of plants to Dr. D for me? The first terrarium. 25 00:02:16,480 --> 00:02:18,560 Sure, no problem. Great.