Questions Insects
Snails
Shellfish
Spiders
Worms
1. Where do
they live?
2. What do
they eat?
3. How many
body
segments do
they have?
4. How do
they survive
lescape from
their
enemies?​

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.