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a body is a part of a living thing
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food contains nutrients for living things
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digestion is when an organism takes in nutrients from food into itself by eating
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if something causes something else, then that something else occurs after that something
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eating food is used to get nutrients by animals
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if something is made of something else then that something contains that something else
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nutrients are simpler than food
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food contains nutrients for living things
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if something is made of something else then that something can be broken down into that something else
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nutrients are a kind of substance
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digestion is when stomach acid breaks down food
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food contains nutrients
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the small intestine is a part of the digestive system
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the stomach is a part of the digestive system
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the digestive system digests food for the body
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a protein is a kind of nutrient
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the intestines are a part of the digestive system
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the digestive system digests food for the body
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shape is a kind of physical property
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if something undergoes a physical change then the physical properties of that something will change
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if an organ digests food then the food must pass through that organ
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squeezing an object can cause that object 's shape to change
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something can be squeezed through something else in order to help it pass through that something else
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if something releases something else then that something is the source of that something else
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an example of regulation is regulating body functions
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regulation is when an organism maintains a stable internal environment
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hormones regulate body functions
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the amount of sugar in blood is a part of an animal 's internal environment
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the endocrine system is a source of hormones
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insulin is a kind of hormone
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removing waste is a kind of function
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the excretory system performs excretion
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excretion is when the excretory system removes waste from the body
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excretion is when the excretory system removes waste from the body
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the excretory system performs excretion
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removing waste is a kind of function
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destroying something is a kind of method for getting rid of something
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the immune system gets rid of bacteria once they have invaded the body
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white blood cells are a part of the immune system
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a kind of cell helps destroy pathogens
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bacteria is a kind of pathogen sometimes
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white blood cells are a kind of cell
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the immune system attacks bacteria once they have invaded the body
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white blood cells are a part of the immune system
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pathogens can cause disease
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bacteria is a kind of pathogen sometimes
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if a process is used by something then that something causes that process
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sneezing is used for getting rid of bacteria / viruses by the body
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the immune system gets rid of bacteria / viruses once they have invaded the body
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viruses can cause disease
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bacteria sometimes cause disease
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the immune system attacks bacteria / viruses once they have invaded the body
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attacking something is a kind of method for defending against something
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swimming is when animals can move in water
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moving something is a kind of function
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moving faster is a kind of method for moving better
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webbed feet are used for moving faster through water by aquatic animals
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helping means something can be done better
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flippers are a part of a sea turtle
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flippers are used for moving in water
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where an animal lives is that animal's habitat
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an ocean is a kind of body of water
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if something is used for a process, then that something helps that process
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a sea turtle lives in the ocean
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producing thrust causes an animal to move
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if two things perform the same function then those two things are similar
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a squid produces a stream of water out of its body that causes it to move
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a rocket engine is used to produce thrust by pushing gases out at a high speed
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producing something is a kind of function
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relaxing is a kind of movement
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biceps are part of an arm
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the elbow is part of an arm
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a tricep is a kind of muscle
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straightening is a kind of movement
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triceps are part of an arm
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muscular movement helps animals move
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a bicep is a kind of muscle
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contracting is a kind of movement
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if things are part of the same something, then those things are connected
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muscle cells are a part of muscles
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moving changes stored energy into kinetic energy and heat energy
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a bone is a part of a body
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muscle cells can store and release large amounts of energy
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if a process changes something into something else, then that something is required for that process
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muscles push / pull bones to move the bones
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muscles are a part of the body
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a reflex is a kind of action
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muscular movement helps animals move
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if two or more systems are used to cause a single action, then those systems work together to cause that action
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the muscular system contains muscles
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the nervous system is used for controlling the body
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movement is a kind of action
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moving parts of something helps to move that something
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muscles push / pull bones to move the bones
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the muscular system contains muscles
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if things are used in a process, then those things are involved in that process
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skeletal system is made of bones
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a skeletal system is a part of an animal
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the skeletal system is used to give structure for the body of animals
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muscular movement helps animals move
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