A raw material for photosynthesis is
The anthers of flowers
attract insects contain egg cells develop into fruits produce pollen
The nucleus of a cell contains
cellulose cytoplasm genes starch
Children need calcium in their diets to
cure constipation help bones to develop make them healthy supply energy
All plant and animal cells have
a cell surface membrane a cell wall a large vacuole chloroplasts
An insect has
a hard backbone a soft cuticle eight legs three pairs of legs
The decay of dead organisms is caused by the
carnivores decomposers herbivores producers
Sweating
cools the body gets rid of unwanted water keeps the skin moist warms the body
Fertilisation takes place when a sperm combines with
a sperm an egg (ovum) an ovary an ovule
Smoking may reduce the surface area of the
lungs bladder heart kidneys