A theory is a set of sentences which is closed to make logical implications.
Yes. They have cells, they have seeds to reproduce, and they respond to environment. Rotting is an example of an apple developing (although it is dying), using energy, and responding to the environment.
I believe for number 1 the answer is A 260
NOUN
the natural coloring matter of animal or plant tissue.
VERB
(pigmented)
color (something) with or as if with pigment.
"pigmented areas such as freckles"
Answer:the decline of lichens is an important indicator of an imbalance in the ecosystem. this research can help system ecologists predict how pollution will affect the entire ecosystem
Explanation: