volume change it travels through all types the media......
Its Light because it reacts to photosynthesis
Simple....
as you've learned... cells create tissue..tissue creates organs...organs create organ systems..and organ systems create organisms. They all work together to create something...
An example:
muscle cell-->>muscle tissue-->>heart-->>circulatory system-->>the circulatory system makes up a part of the body.
Thus, your answer.
She should ask about what she needs to know and then right it down for when she needs it!
Answer:
Intraspecific competition
Hope this helps!