Humans
bean-shaped organs that filter blood to remove waste products
kidney
substances which cause pollution
pollutants
an unwanted plant or animal, such as an insect that eats your flowers
pest
a small beat felt under the skin due to the pressure of blood as the heart pumps it around the body
pulse
Sulfur dioxide mixes with water and becomes?
sulfuric acid
the organs we use for breathing
lungs
to re-process something and make into a new product
recycling
a consumer that eats other animals
predator
liquid produced in the mouth
saliva
a growth on body organs
tumour
fibres which carry messages to and from the brain
nerves
The three Rs
Reduce, reuse, recycle
an animal that is eaten by another animal
prey
a place that is covered in shallow water most of the time
wetland
the organ which mixes chewed food with digestive juices to form a thick liquid
stomach
the brain and nerves
nervous system
grassland regions with a tropical climate
savannah
a plant that produces energy from sunlight
producer
Nitrogen oxide mixes with water and becomes?
Nitric acid
the tube that carries air from the nose and mouth to the lungs and back again
windpipe
different organs that work together to carry out a certain function in the body
organ system
tropical countries lie between the tropics where the climate is hot and wet; 23 degrees north or south of the equator
tropical
a particular type of plant or animal
species
The three polluting gases in cities are?
nitrogen oxide, sulfur dioxide and carbon monoxide
Carbon monoxide