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All about ecosystems

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  • What is an ecosystem?
    An ecosystem is all of the living things that live, feed, reproduce and interact with the other living things and with the physical environment.
  • Who are the consumers in a marine ecosystem?
    The consumers are fish, marine mammals, starfish, coral and zooplankton.
  • Choose the correct one!
    1. hide form predators
  • How can you prevent air pollution?
    I can prevent air pollution by using public transport or walking, instead of taking the car.
  • What is this?
    This is a food chain.
  • Explain at least two reasons why we need to control human activities to protect our planet.
    To avoid: 1.Animal and plant's extinctions. 2. Natural resource's exhaustions. 3. Too much air and water's pollution. 4. Covering all the land with rubbish.
  • The ____________ factors are the living things in an ecosystem.
    Biotic
  • In which biome can we get -40ºC in winter?
    In the cold desert.
  • What is a biome?
    It is a large geographical area on Earth with similar climatic conditions.
  • Name at least five terrestrial ecosystems.
    City, holm oak forest, pasture, mountain pine forest, riparian forest, scrubland or oak grove.
  • Name the seven biomes we learned.
    Cold desert, oceanic forest, rainforest, taiga, mediterranean forest, hot desert and savannah.
  • Who are the decomposers in a marine ecosystem?
    Fungi, bacteria and other microorganisms.
  • Choose the correct one!
    2. Rainforests.
  • Choose the correct one!
    4. There are very few tress, but abundant grass.
  • Describe the connection between living things in a food chain (use 5 labels)
    A producer is eaten by a primary consumer, that is eaten by a secondary consumer, that is eaten by a tertiary consumer, that is eaten by a decomposer.
  • Choose the correct one!
    4. Riparian Forest
  • Name at least five aquatic ecosystems.
    Lake, marsh, river, coral reefs, sea, ocean, pond or abyssal depths.
  • What is this?
    This is a food web.
  • Who are the producers in a marine ecosystem?
    The producers are phytoplankton and algae.
  • The abiotic factors that differentiate a lake and the sea are...
    salinity and light level.
  • What would happen to the next consumers if the population of grasshoppers decreases?
    The consumers (frogs, snakes and eagles) will decrease too.
  • Let's speak! What is pollution?
    Pollution is the energy production from fossil fuels and industrial activities that damage the air and water.
  • Name the three natural causes that can disrupt the ecological balance of an ecosystem.
    Natural disasters, diseases and plagues and changes to population.
  • In this biome there is very little vegetation, the plants have spines instead of leaves to reduce water loss and many animals are nocturnal. Which one is it?
    It is Hot Desert.
  • Choose the correct one!
    2. are omnivores and carnivores.
  • What is the difference between a food web and a food chain?
    A food chain shows the path of energy from producers to consumers and a food web is a group of interconnected food chains.
  • What will detemine the number and species of plants that can survive in a biome?
    Temperature and rainfall.
  • What type of ecosystem are lakes, rivers, marshes and estuaries?
    Freshwater ecosystems.
  • Depending of how light penetrates in a marine ecosystem, what are the three main zones?
    The coastal zone, the middle zone and the deepest zone.
  • Let's speak! Explain what an evergreen tree is.
    An evergreen tree is a tree that keeps its leaves all year long.
  • Choose the correct one!
    1. The holm oak forest
  • What are the four factors that influence the kinds of aquatic ecosystems?
    They are salinity, depth, water flow rate and light level.
  • What is the concentration of dissolved salts?
    It is salinity.
  • Name at least five individual actions that can contribute to sustainability.
    1.Save water 2.Save energy 3.Eat organic produce 4.Compost 5.Prevent air pollution 6.Buy local 7.Avoid plastics 8.3R's 9.Save forests
  • Choose the correct one!
    1. Fungi
  • In this biome we can find conifer forests with lichen and moss and grass growing in the clearings. Which one is it?
    It is Taiga
  • Choose the correct one!
    1. There is very little vegetation.
  • What would happen to the fox if the population of producers increases?
    They will increase too. If there is more grass, there will be more rabbits that can eat and there will be more food for foxes.
  • What factor describes if water is moving or still?
    Water flow.
  • Name the four main human threats that can disrupt the ecological balance of an ecosystem.
    Overfishing, deforestation, overpopulation and pollution.
  • Choose the correct one!
    3. The sum of all the individuals of the same species.
  • Let's speak! Explain three ways of saving forests.
    1. Not wasting too many paper. 2. Using recycled paper. 3. Supporting forest conservation.
  • The ____________ factors are the non-living things in an ecosystem.
    Abiotic
  • How many metres can light penetrate in a marine ecosystem?
    Light can penetrate 200m.
  • Let's speak! What is deforestation?
    It is the action of cutting down too many forests (trees) to grow crops for the human population.
  • ____________ refers to a state of stability in an ecosystem.
    Ecological balance.
  • In this biome the trees are mostly deciduous. The animals store fat and hibernate or migrate during the cold months. Which one is it?
    It is Oceanic Forest.
  • What is the 3R's principle? Why is it important?
    The three R's – reduce, reuse and recycle – all help to cut down on the amount of waste we throw away.
  • Name one common feature between cold desert and hot desert.
    There is very little vegetation.
  • Let's speak! What is overfishing?
    Overfishing is catching fish more quickly than they can reproduce, so the fish populations decrease.
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