the answer is the third one c
Homeostasis, aka your body maintaining life and the right amounts of stuff.
A tree is considered living because it takes in nutrients like other living things. The tree is also made up of cells which all living things are made up of. Trees can also produce offspring. Just like any other living thing.
Answer:
Paper Chromatography
Investigators use paper chromatography to distinguish the different brands of ink pens used by the suspects and compare it to the forged cheque.