The gravitational pull on moon A will be lower since it is further away from the new planet.
Moment about D=0
or,T1*6a-5w*3a-9w*2a=0
T2+T1=5w+9w
The energy flow in the ecosystem is important to maintain an ecological balance. The producers synthesis food by the process of photosynthesis. A part of the energy is stored within the plants. The remaining energy is utilized by the plants in their growth and development.
The correct answer is B because isotopes have different numbers of neutrons, and neutrons are located in the nucleus
Hope this helps
