The answer: The Geiger Counter
The abdominal cavity is the answer you are looking for.
The type of reproduction that is considered to be the safest among the land-dwelling animals would be the carrying of eggs internally. In addition, the use of eggs as a reproductive material would promote the welfare of an animal's offspring wherein it is properly taken care of and away from harm.
Because grasslands do not have many trees, only lots of grass and flat earth. Even if there were flying birds and tree animals, there'd be very few of these, with the fact that there are almost no trees at all in grasslands.
I hope this helps, please Brainliest me, and have a fantastic day! :D
