Physics, Chemistry and Biology: Post your doubts here!

[Alishba Siddique]

State two features for each of the anthropods classess(insects,crustaceans,arachnids,and myriapods) that distinguishes it from others

• Insects:
• three pairs of legs
• body divided into head, abdomen and thorax
• one pair of antennae
• one pair of compound eyes
• usually have two pairs of wings
• Crustacea:
• five or more pairs of limbs
• body divided into cephalothorax (combined head and thorax) and abdomen
• two pairs of antennae
• one pair of compound eyes
• exoskeleton often forms a hard covering over most of the body
• Arachnids:
• four pairs of legs
• body divided into cephlathorax and abdomen
• no antennae
• several pairs of simple eyes
• pair of pedipalps adapted for biting and poisoning preys
• Myriapods:
• 10 or more pairs of leg (usually one pair per segment)
• body not obviously divided into thorax and abdomen
• one pair of antennae
• simple eyes

You can write any of the two

 

[an04as]

can anyone share IGCSE read and write physics and chem topicals both paper?

again IGCSE read and write topicals not olvl.
Thanks in advance