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chapter 19: Interactions within ecosystem - Coggle Diagram
chapter 19: Interactions within ecosystem
Interactions with the biotic environment
predator-prey relationship
predators are animals that hunt and kill other animals for food
animals that are killed and eaten are called prey
parasitism
relationship in which one organism benefits while the other is harmed
mutualism
relationship between two organism in which both organisms benefit
energy flow in food chain and food web
only 10% of the energy is being passed on to the next link and 90% of it is lost
animals at the back of the food chain has to consume more food to get enough energy
upsetting the balance
there must be enough producer to provide food
abiotic factors (factors of physical environment)
minerals
for healthy growth, minerals such as nitrogen, phosphorus and potassium
light
plants need light to make food through photosynthesis
animals need light to see to find food and avoid danger
pH
the pH value of solutions in soil, or water in ponds and the sea affects the kinds of organisms that live in these habitats
air
plants need carbon dioxide in the air for photosynthesis
most organisms need oxygen for respiration
oxygen in the water are dissolved for the animals living in the water
water
all organisms need water to survive
the amount of water in a habitat depends on the rainfall in the year
temperature
to live in hot or cold places, organisms have structural and behavioural adaptations
energy flow in an ecosystem
food chain
secondary consumer
eats the primary consumer
tertiary consumer
eats the secondary consumer
primary consumer
eats the producers
producer
provides food and energy for the consumers
each organism in the food chain is called a link
food web
many food chains makes up a food web
respiration vs breathing
respiration
is the release of energy from the food we eat
breathing
is the exchange of oxygen and carbon dioxide between organism and the environment