1. Climate Change.
2. Fire Ecology.
3. Renewable Energy.
4. Urban Ecology
5. Remote Sensing and Geographic Information Systems.
Let the no of months be x
the equation will be-
42+x=3(8+x)
42+x=24+3x
2x=18
x=9
after 9 months Tom will be thrice his dog's age
Glad I can help!!
Answer:
A system is a group of interacting or interrelated entities that form a unified whole. A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and expressed in its functioning. Systems are the subjects of study of systems theory
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