A. Gravity
B. Ozone layer
C. Troposphere
D. Ecosystem
Submitted by: Ashfaque Ali Khoso
Correct Answer: Gravity ✔
Last Updated: May 29, 2019
A. Gravity
B. Ozone layer
C. Troposphere
D. Ecosystem
Submitted by: Ashfaque Ali Khoso
Correct Answer: Gravity ✔
Last Updated: May 29, 2019