Tyler wants to learn about the types of insects in the soil near his house. witch would be a benefit of carrying out a descriptive investigation?

As the name says the goal of the descriptive investigation is to describe. 
This type of investigation has no hypothesis, but only a question. With this type of investigation Tyler will be able to observe all types of insects and study the insects in many various aspects and provides a bigger overview, because it uses both quantitative and qualitative data.

True statement gravity force is more on bigger mass, less on smaller mass.all mass fall on planet with same acceleration and speeds

Yes they are correct good day