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respiration is a source of energy for living things & if something releases something else then that something is the source of that something else
respiration releases energy
photosynthesis stores energy & respiration releases energy
photosynthesis stores energy and respiration releases energy
a lung is a kind of internal organ & internal organs are a part of the body
lungs are a part of the body
lungs are a part of the body & if something harms something else, then that something also harms the parts of that something else
if something harms the body, then that something also harms the lungs
if something harms the body, then that something also harms the lungs & smoking is a kind of method for inhaling smoke0
smoking harms the lungs
smoking harms the lungs & smoking is a kind of method for inhaling smoke
inhaling smoke by smoking harms the lungs
harming something has a negative impact on / effect on that something & damage has a negative impact on a thing
damage can mean harm
inhaling smoke by smoking harms the lungs & damage can mean harm
inhaling smoke by smoking causes damage to the lungs
smoking is a kind of method for inhaling smoke2 & when a lung breathes in air the air goes directly to the lungs
a lung is a kind of organ for directly breathing in air
a lung is a kind of organ for directly breathing in air & smoking is a kind of method for inhaling smoke1
a lung is a kind of organ for directly breathing in gasses
a lung is a kind of organ for directly breathing in gasses & smoke is a kind of gas
lungs can be used for directly breathing in smoke
lungs can be used for directly breathing in smoke & to inhale means to breathe in
lungs are a part of the body0: lungs can be used for directly inhaling smoke
lungs are a part of the body0 & inhaling smoke by smoking causes damage to the lungs
smoking causes direct damage to the lungs
blood is made up of blood cells & blood is a vehicle for carrying oxygen from the lungs to the rest of the body
blood cells carry oxygen to the body
red blood cells contain hemoglobin & red blood cells are a kind of blood cell
red blood cells are a kind of blood cell that contain hemoglobin
red blood cells are a kind of blood cell that contain hemoglobin & hemoglobin is a kind of protein that carries oxygen
red blood cells are a kind of blood cell that contain a protein that carries oxygen
blood cells carry oxygen to the body & red blood cells are a kind of blood cell that contain a protein that carries oxygen
red blood cells carry oxygen throughout the body
to transport can mean to carry & transporting is a kind of function
carrying is a kind of function
carrying is a kind of function & red blood cells carry oxygen
the function of red blood cells is to carry oxygen
the circulatory system carries food from the digestive systems to the whole body & food contains nutrients for living things
the circulatory system carries nutrients from the digestive systems to the whole body
veins carry blood from the body to the heart & arteries carry blood from the heart to the body
veins and arteries carry blood throughtout the body
veins and arteries carry blood throughtout the body & the circulatory system transports blood throughout the body
veins / arteries are a part of the circulatory system
the circulatory system carries nutrients from the digestive systems to the whole body & veins / arteries are a part of the circulatory system
arteries / veins transport nutrients to the whole body
blood is a part of the circulatory system & digestion is when food is absorbed into the blood stream
food is absorbed into the circulatory system through the blood
food is absorbed into the circulatory system through the blood & the circulatory system transports blood throughout the body
the circulatory system carries food from the digestive systems to the rest of the body
the circulatory system carries food from the digestive systems to the rest of the body & food contains nutrients for living things
the circulatory system carries nutrients from the digestive systems to the rest of the body
the circulatory system carries nutrients from the digestive systems to the rest of the body & cells are a part of the body
the circulatory system carries nutrients from the digestive system to the body's cells
digestion is when food is absorbed into the blood stream & the digestive system digests food for the body
the digestive system absorbs food into the blood stream
the digestive system absorbs food into the blood stream & blood is a part of the circulatory system
food is absorbed into the circulatory system through blood
food is absorbed into the circulatory system through blood & the circulatory system transports blood throughout the body
the circulatory system carries food from the digestive systems to the rest of the body using blood
the circulatory system carries food from the digestive systems to the rest of the body using blood & food contains nutrients for living things
the circulatory system carries nutrients from the digestive system to the rest of the body using blood
nutrients are a kind of simple substance & food contains nutrients for living things
food contains simple substances in the form of nutrients
food contains simple substances in the form of nutrients & the breaking down of food into simple substances occurs in the digestive system
the digestive system breaks down food into nutrients for the body
food is a kind of substance & digestion is when food is absorbed into the blood stream
food is a kind of substance that is absorbed into the blood stream
food is a kind of substance that is absorbed into the blood stream & blood is a vehicle for carrying substances
blood is a vehicle for carrying food
blood is a vehicle for carrying food & the circulatory system transports blood throughout the body
the circulatory system carries food from the digestive systems throughout the body
the digestive system breaks down food into nutrients for the body & the circulatory system carries food from the digestive systems throughout the body
the digestive system and the circulatory system help to break down food and carry it throughout the body
the digestive system and the circulatory system help to break down food and carry it throughout the body & cells are a part of the body
the digestive system and the circulatory system help to break down food and carry it to the body's cells
the digestive system digests food for the body & digestion is when food is absorbed into the blood stream
the digestive system absorbs food into the blood stream
the digestive system absorbs food into the blood stream & blood is a part of the circulatory system
the digestive system absorbs food into the circulatory system through the blood stream
the digestive system absorbs food into the circulatory system through the blood stream & the circulatory system transports blood throughout the body
the circulatory system absorbs / carries food from the digestive systems to the rest of the body
the circulatory system absorbs / carries food from the digestive systems to the rest of the body & the digestive system breaks down food into nutrients for the body
the digestive system breaks down food into nutrients which are absorbed into and carried through the body by the circulatory system
arteries / veins transport nutrients / water / minerals to the whole body & the body of an animal contains arteries / veins
arteries and veins in animals transport nutrients / water / minerals to the whole body
arteries and veins in animals transport nutrients / water / minerals to the whole body & special tissues in plants transport food / water / minerals throughout the plant
arteries and veins in animals and special tissues in plants both transport food / water / minerals trhoughout the body / plant
arteries and veins in animals and special tissues in plants both transport food / water / minerals trhoughout the body / plant & transporting nutrients, water, and minerals is a kind of function
arteries and veins in animals and special tissues in plants both perform the function of transporting food / water / minerals trhoughout the body / plant
arteries and veins in animals and special tissues in plants both perform the function of transporting food / water / minerals trhoughout the body / plant & if two things perform the same function then those two things are similar
special tissues in plants are similar to arteries and veins in animals
a stem is often a part of plant & a plant stem contains a system of tubes for transporting water and nutrients to other parts of the plant
some plants use a system of tubes for transporting water and nutrients to other parts of the plant
some plants use a system of tubes for transporting water and nutrients to other parts of the plant & special tissues in plants transport food / water / minerals to other parts of the plant
plants use special tissues or a system of tubes to transport nutrients / water / minerals to the rest of the plant
arteries / veins transport nutrients / water / minerals to the whole body & arteries / veins are parts of a body
arteries / veins are parts of a body that transport nutrients / water / minerals to the whole body
arteries / veins are parts of a body that transport nutrients / water / minerals to the whole body & the body of an animal contains arteries / veins
an animal contains a part that transports nutrients / water / minerals to the whole body
plants use special tissues or a system of tubes to transport nutrients / water / minerals to the rest of the plant & an animal contains a part that transports nutrients / water / minerals to the whole body
plants and animals both contain parts that transport nutrients throughout the plant / body
a plant / living thing requires nutrients to grow & an animal / living thing requires nutrients for survival
all plants and animals require nutrients to survive / grow
plants and animals both contain parts that transport nutrients throughout the plant / body & all plants and animals require nutrients to survive / grow
all plants and animals contain parts that transport nutrients throughtout the plant / body
digestion is when stomach acid breaks down food & the digestive system digests food for the body
the digestive system breaks down food
if something is made of something else then that something can be broken down into that something else & if something is made of something else then that something contains that something else
if something contains something else then that something can be broken down into that something else
the digestive system breaks down food & if something contains something else then that something can be broken down into that something else
the digestive system breaks down food into the substance that it contains
a body is a part of a living thing & food contains nutrients for living things
food contains nutrients for a living thing's body
the digestive system breaks down food into the substance that it contains & food contains nutrients for a living thing's body
the digestive system breaks down food into nutrients for the body
nutrients are simpler than food & nutrients are a kind of substance
nutrients are a kind of simple substance
the digestive system breaks down food into nutrients for the body & nutrients are a kind of simple substance
the breaking down of food into simple substances occurs in the digestive system
the digestive system digests food for the body & digestion is when stomach acid breaks down food
the digestive system breaks down food
if something is made of something else then that something can be broken down into that something else & if something is made of something else then that something contains that something else
if something contains something else then that something can be broken down into that something else
the digestive system breaks down food & if something contains something else then that something can be broken down into that something else
the digestive system breaks down food into the substances it contains
a body is a part of a living thing & food contains nutrients for living things
food contains nutrients for a living thing's body
the digestive system breaks down food into the substances it contains & food contains nutrients for a living thing's body
the digestive system breaks down food into nutrients for the body
digestion is when an organism takes in nutrients from food into itself by eating & eating food is used to get nutrients by animals
an animal eating food causes the food to be digested
an animal eating food causes the food to be digested & if something causes something else, then that something else occurs after that something
after food is eaten is it digested
if something is made of something else then that something contains that something else & if something is made of something else then that something can be broken down into that something else
if something contains something else then that something can be broken down into that something else
if something contains something else then that something can be broken down into that something else & digestion is when stomach acid breaks down food
when food is digested it is broken down into the things it contains
when food is digested it is broken down into the things it contains & food contains nutrients for living things
when food is digested it is broken down into nutrients
nutrients are simpler than food & nutrients are a kind of substance
nutrients are a kind of simple substance
when food is digested it is broken down into nutrients & nutrients are a kind of simple substance
when food is digested it is broken down into simple substances
after food is eaten is it digested & when food is digested it is broken down into simple substances
after food is eaten is it digested into simple substances
food contains nutrients & a protein is a kind of nutrient
food contains proteins
food contains proteins & the digestive system digests food for the body
the digestive system digests proteins for the body
the digestive system digests proteins for the body & the small intestine is a part of the digestive system
a small intestine is a part of a human 's digestive system for the digestion of proteins
food contains nutrients & a protein is a kind of nutrient
food contains proteins
food contains proteins & the digestive system digests food for the body
the digestive system digests proteins for the body
the digestive system digests proteins for the body & the stomach is a part of the digestive system
a stomach is a part of a human 's digestive system for the digestion of proteins
a small intestine is a part of a human 's digestive system for the digestion of proteins & a stomach is a part of a human 's digestive system for the digestion of proteins
digestion of proteins occurs in the stomach / small intestine
shape is a kind of physical property & if something undergoes a physical change then the physical properties of that something will change
an example of a physical change is changing something's shape
an example of a physical change is changing something's shape & squeezing an object can cause that object 's shape to change
an example of a physical change is squeezing something
the intestines are a part of the digestive system & the digestive system digests food for the body
the intestines are a part of an animal's digestive system for digesting food
the intestines are a part of an animal's digestive system for digesting food & if an organ digests food then the food must pass through that organ
during digestion, food passes through the intestines
during digestion, food passes through the intestines & something can be squeezed through something else in order to help it pass through that something else
during digestion, food is squeezed through the intestines
an example of a physical change is squeezing something & during digestion, food is squeezed through the intestines
an example of a physical change is squeezing food through intestines during digestion
regulation is when an organism maintains a stable internal environment & the amount of sugar in blood is a part of an animal 's internal environment
an example of regulation is controlling the amount of sugar in an animal's blood
if something releases something else then that something is the source of that something else & the endocrine system is a source of hormones
the endocrine system releases hormones
the endocrine system releases hormones & hormones regulate body functions
hormones are released to regulate body functions
hormones are released to regulate body functions & an example of regulation is regulating body functions
hormones are released for regulation
hormones are released for regulation & insulin is a kind of hormone
insulin can be released for regulation
an example of regulation is controlling the amount of sugar in an animal's blood & insulin can be released for regulation
an example of regulation is insulin being released to control the amount of sugar in blood
the excretory system performs excretion & excretion is when the excretory system removes waste from the body
the excretory system removes waste from the body
the excretory system removes waste from the body & removing waste is a kind of function
a function of the excretory system is removing waste from the body
excretion is when the excretory system removes waste from the body & the excretory system performs excretion
the excretory system removes waste from the body
the excretory system removes waste from the body & removing waste is a kind of function
removing waste from the body is a function of the excretory system
destroying something is a kind of method for getting rid of something & the immune system gets rid of bacteria once they have invaded the body
the immune system destroys bacteria once they have invaded the body
the immune system destroys bacteria once they have invaded the body & bacteria is a kind of pathogen sometimes
the immune system destroys pathogens that have invaded the body
white blood cells are a part of the immune system & white blood cells are a kind of cell
white blood cells are a kind of cell that are part of the immune system
the immune system destroys pathogens that have invaded the body & white blood cells are a kind of cell that are part of the immune system
white blood cells are a kind of cell that is a part of the immune system which destroys pathogens that have invaded the body