There are at least 900,000 species, but many more probably have yet to be discovered. Insects all have bodies consisting of a head, a thorax of three segments, usually three pairs of legs and often one or two pairs of wings. Their heads have compound eyes and long antennae that are sensitive to touch and smell.
The best answer is choice C. why? Because the rivers flow from the dry side of Texas to the very wet and damp side of Texas. hope this helped, have an amazing day :)