It is the chlorophyll/chloroplast. The chlorophyll is the color
Answer:
The pennies represent the particles of the isotope either decaying, or staying the same after each shake. This is a random process.
A closed circuit will light the bulb because electricity flows through it.
But on the other hand in an open circuit there is no flow of electricity current hence no light is produced
plants are equipped with immune systems to defend against pathogens, many produce chemicals to ward off attacks from potential predators <span>Some plants also have spiky thistles and needles</span>
