The area of study is called political science
Teperature
Ph level
Substrate concentration
Not sure if these are physical but hope it helped.
It is true that studies of animals show that they play only when the physical survival needs have been met; however, there is growing evidence that for children, play is crucial in terms of biological evolution as well as individual development.
Answer:
The correct answer from the options is Growth.
Explanation:
There are seven basic characteristics of life which separate living things from non- living things.
Growth is one of the characteristics which separate a living thing from a non- living thing. The plants use essential macromolecules for growing. The fire will not have macromolecules to grow. Hence, growth is the option that is correct.
Other options like defined boundary are incorrect because both plants and animals have a defined boundary.
