If light is imagined as a flow of particles, the particles are called photons with each photon carrying a discrete packet of energy. ..
Some of the main functions of skin cells are to provide protection, perceive and transmit sensation, control evaporation and regulate temperature.<span> Skin cells, which are epithelial cells, are also self-repairing and reproduce quickly.</span>
Answer: ideas can change as new discoveries are made
Explanation:
When you find out something new you form new ideas
When Sarah performed this experiment, she changed the levels of nitrogen in order to observe the changes in the morphological features of the plant.
All of the characteristics of the plant that she observed were dependent on multiple different things, but the level of nitrogen was an independent variable that she was changing at her will.
Explanation:
As I think last option is the correct suitable one.
