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Hello, my name is Anas and I am going to present relationships in ecosystems.

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One, interrelationships in ecosystems.

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Living things are affected by some factors.

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The main factors in interrestrials ecosystems are temperature, humidity, type of soil and light.

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And in the aquatic ecosystems, temperature, water current, soil content, that we can name it salinity, and light.

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We can also modify the environment.

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For example, the beaver modifies the environment by blocking the water, and that can affect other living things.

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Two, adaption to the environment.

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Living things have to adapt to the environment.

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An area where the living things live and have all their needs is named a habitat.

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For example, the cactus can adapt because they have special leaves.

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the small leaves, the hair leaves and waxy leaves for the waterfalls, and they have got large roots for finding more water.

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And animals can also adapt. For example, the polar bears that have holes for walking and swimming in the ice.

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Three, nutrition in ecosystems. All living things need food to survive. There are some types of living things.

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the producer, consumers, the composers, and scavengers.

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The producers are the plants that they make their own food.

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The consumers eat other living things.

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There are three types.

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Primary consumer that eats the plants, so they are herbivores.

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Secondary consumer that they eat the primary consumers, so they are carnivores.

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And tertiary consumers that eat secondary consumers, plants and plants, that they are omnivores.

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The composers eat the remains of living things, and scavengers eat microorganisms and fungi

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that eats the dead animals and plants.

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Four, this is a food chain in the terrestrial ecosystem.

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This is a producer that eats grass.

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This is a primary consumer, a herbivore,

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that is a rabbit, and a secondary consumer that is a carnivore, that eats the primary consumer.

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And this is a secondary consumer.

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Four, food webs. Food webs are many food chains joined together.

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Five, mutualism. Mutualism is the relationships between two species

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when they both benefit.

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For example, the flower gives the pollen, the nectar,

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to the bees, and the bees go to other flowers

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and the nectar falls to the other flowers.

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Sixth, commensalism.

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Commensalism is the relationship between two species when one benefits and the other species remains unaffected.

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7. Parasitism. Parasitism is the relationship between two species when one benefits and the other suffers.

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The living thing that benefits is named parasite.

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Eight, competition.

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Competition is the relationship between two species when the two compete for the prey or when they have the same needs.

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For example, here, the two animals are competing for the male.

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And here, the two animals are competing for the female.

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This is my...

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Hello, my name is Richie.

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Hello, my name is Dan, and we are going to present our oral presentation.

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This is a special of FoodWeb.

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food web is many many food chains interconnected and related this food

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web is related to the same producer the primary sector the second sector and

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The producers are the desert plants that eat the desert grass, the small lizards and the insects.

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Yes, they are the producers, they are the plants that make their own food, and the consumers that eat other organisms.

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In this food web, there are no decomposers or scavengers.

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This desert plant is eaten by insects, by scorpions or the large lizard.

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The desert plants can be eaten by different animals.

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The primary sectors that are the desert rats, the small lizards and insects are eaten by

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scorpion, by large lizards and snakes.

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The tertiary consumers are the foxes and the hawks.

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The hawks eat the desert rats and the snakes and also the large lizards.

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And the foxes eat this bromide, the substrat, and the large lizard with snakes.

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The main factors in a terrestrial ecosystem are light, humidity, type of soil, and air.

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No, it means water. Temperature.

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And this is Agüero.

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Hello, my name is Elena and I am going to talk about the relationships in an ecosystem.

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In this terrestrial model, the following factors are humidity, light, type of soil, and temperature.

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The living things are rabbits, foxes, and eagles.

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The producers are the grass and the trees.

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and the primary consumer are the rabbits that eat the producers.

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The secondary consumers are the foxes that eat the rabbits

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and the tertiary consumer is the eagle that eats the foxes.

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The consumers can be primary consumer, secondary consumer, and tertiary consumer.

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The primary consumer always eats herbivore.

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The secondary consumer always eats carnivore.

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And the tertiary consumer sometimes eats carnivore and others omnivore.

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The arrow in the food chain will start always in the producer and it becomes a consumer.

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And this is my other presentation.

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Hello, my name is Irene.

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Hello, my name is Sara and we are going to present our natural project.

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We made a romantic ecosystem.

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There is a penguin, a polar bear and a walrus.

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and a fossil of a turtle that is missing.

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And there are two whales and a fish swimming in the water.

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Then the turtle is a fossil because they can't live there

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because if not they die in the water

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and they can't adapt because it's very cold and also they die.

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And in the fossil it couldn't survive

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because it didn't have the food that it needs

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and they have a house where they need to live then they they live there adapting for a climate

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and also eating each other and making their own houses the waste is the workers and the

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virus is the penguins the penguins in the fish and the fish is the little fish and the

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and the dolphins and the werewolves compete for the fish.

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The polar bears also compete for the fish, so only one species can survive.

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And that's our natural project.

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Hello, my name is Maria.

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Hello, my name is Andrea.

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And we are going to present our natural science project

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project that is about the deciduous forest and the adaption and food.

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First we are going to speak about the adaptation.

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The producer grows in places where the deciduous forest is.

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Some animals die because of the existence of plants like grass.

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They may find their environment life-threatening.

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The primary consumer in this ecosystem is the mouse. It has to adapt to the climate because it can live in arctic zones like Sweden or Norway.

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So it has to adapt to the climate because here it is not very cold.

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The ratio is an error. They add up to the temperature because usually it is in this age. But if it is yellow, so many times it will eat and camouflage with the trap.

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The harrier also has to adapt to the temperature because it can live in places where there are extreme temperatures. So if it migrates to the forest, it has to adapt because it is not extreme temperature.

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This is a picture of a food chain in the deciduous forest, and this is a decomposer.

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And now we are going to speak about the food.

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The producers make all the food. This is the photosynthesis.

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Mainly, the minerals are sun, light, carbon dioxide, and mineral.

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The primary consumer in this ecosystem is the mouse. And it eats grass, seeds, roots, stems and leaves. Also it eats some insects like butterflies, cockroaches, beetles and other insects.

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The red snake eats rabbits and mice and others and many others.

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The red person eats the secondary concern.

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The harrier eats the rattlesnake, some small birds, rodents and big insects.

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For this reason, it is tertiary in concept.

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Here are the decomposers, are the machines that break down the animals and plants.

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They eat organic waste.

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In this ecosystem, scavengers come to eat the remains of the living things that are like her.

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This is a producer and these are some examples of apple chain here.

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And in the beginning, they form apple.

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And this is the producers, the primary producer, secondary producer, and the executive producer.