insects的特点用英文表达

insects的特点用英文表达
insects的特点用英文表达

insects的特点用英文表达
Insects are part of a bigger animal group called arthropods.The word Arthropod literally means jointed limbs.The arthropods are the first animal group to have jointed legs.
Insects have certain characteristics.They have six legs.They have three body parts,a head,a thorax and an abdomen.They have wings.They are by far the largest animal group.They also have an outer or exoskeleton made of a substance called chitin..
There are over 700,000 species of insects.While they are relatively small in size compared to many animal groups,they are well adapted to their environments.Most insects live on land.
All insects grow from eggs.They go through various stages until they reach adulthood.This transformation through these stages is called metamorphosis.Insects undergo either complete or incomplete metamorphosis.
The dragonfly,termite,grasshopper and true bug undergo incomplete metamorphosis.In this process there are three stages called egg,nymph and adult.When the nymph hatches from the egg,it looks like the adult insect except it is smaller,has no wings and cannot reproduce yet.As the nymph grows it outgrows its outside skeleton and it is shed.It then regrows a new one.This happens several times before it finally becomes an adult.
Insects like the butterfly,bee,ant,beetle and fly undergo complete metamorphosis.This involves four stages:egg,larvae,pupae and adult.The larvae looks like a worm and hatches from the egg.As it grows,it also sheds it skin.It then grows into a pupa.While the pupa doesn't move around like the larva,it does eventually at this stage change from an immature form to adult form.
There is another group within the arthropods called the arachnids.The arachnids are spiders,scorpions,etc.The annelids are similar to insects.However,they have eight legs.Their wings are quite different from those of the insects.
There are more kinds of insects in the world than any other kind of animal.Many kinds of insects live in the Solomon Islands.Some of the insects found in the Solomon Islands do not live anywhere else in the world.
Some things that all insects have,including honey bees are:
1.Adult insects have 3 body parts:head,thorax,and abdomen.
2.Adult insects have 6 legs
3.Adult insects have compound eyes
4.Most adult insects have antennae,2 pairs of wings,and can fly.
5.Insects have 4 life stages:egg,larva,pupa,adult