Answer: Use this link to find out the answer to your question - https://populationeducation.org/stage-1-demographic-transition-model/ (If you can't click it then just copy-paste it in a new tab)
Have a nice day ahead :) <3
Answer:
I don't know what you want to know about this question can you make it a bit more understandable.
Explanation:
There is really nothing to know. All you have to use is context clues and common sense. We know some synonyms for direct are manage and handle. Indirect means not direct, right? And we can't handle or manage earth's interior (core), right? Therefore, the study of earth's interior is an example of indirect observation because we cannot directly manage it.
The answer is B - Rugged landscape of mountainous land
