milan2003_07
Senior Member
- Joined
- Jan 7, 2011
- Member Type
- Academic
- Native Language
- Russian
- Home Country
- Russian Federation
- Current Location
- Russian Federation
Hello everyone,
I'm currently studying a book on Technical English ("English for Technical Universities") and reading the text about oil recovery. There is multiple-choice exercise I'm doing now and I have doubts regarding the following sentence:
"The field of geology includes subfields that examine all of the _____ systems".
I have a choice between "Earth" and "Earth's". I have found both options possible on the Internet. I would choose "Earth's". Am I right?
I'm currently studying a book on Technical English ("English for Technical Universities") and reading the text about oil recovery. There is multiple-choice exercise I'm doing now and I have doubts regarding the following sentence:
"The field of geology includes subfields that examine all of the _____ systems".
I have a choice between "Earth" and "Earth's". I have found both options possible on the Internet. I would choose "Earth's". Am I right?