What causes this trend of atomic radius

this is the answer, i dont know what test youre doing but i hope it helps

Explanation:

the amount of electrons in the entire atom, each shell has its own amount so, the first shell contains 2, which is closest to the nucleus. the next one has 8, 3rd has 18, and so on.

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation:

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.