Facts can be scientifically tested. As opinion is based on people's thoughts. Scientific theories is only theoretical and new ideas can come into play. And finally we will never know everything about what science has to offer.
To lower the activation energy required to start a reaction
Answer:
a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.
Answer:
well.. since its a predator it helps control the population count of prey. if there's no predator the prey will keep growing and growing (population-wise) and then the preys prey will shrink (also population-wise) and then the pray will die out after that since there's nothing else to eat
Explanation:
Options 1st and 5th are the right answer.
Fine-grained textures commonly signify magma that quickly reduced at or near the surface of the earth. Quick cooling limits crystals from developing very big. In simple terms, texture associates to how big the single mineral grains are in the ultimate, dense rock. In most of the cases, the resulting grain dimension depends on how fast the magma chilled. 1 mm is the cutoff separating fine- and coarse-grained composition.
