For a chemical reaction to occur, activation energy is required. Using the activation energy, reactants form products by breaking bonds which require energy. This type of reaction is an endothermic reaction. When products are formed, bonds are formed back by releasing energy. This type of reaction is an exothermic reaction. When activation energy is used for a reaction, a catalyst is not required. Adding a catalyst to the reaction causes the rate of reaction to increase.
These are examples of interjection. Interjection is a part
of speech that denotes feeling and emotion. For instance, “that hurts!”, “cool!”
and “beautiful!”. If noticed, these are accompanied by an exclamation point
which highlight the authors point of emotion with respect to their statement.
Answer:
Photosynthesis is a process by which green plants turn carbon dioxide and water into food using energy from sunlight.
Answer:
Founder effect
Explanation:
The seeds from a dandelion that is depicted in the picture arrive at a new place where they can grow and this happens by random chance. By the wind blowing in the right direction, these seeds found their way onto some field where new plants sprouted to life. This is an example of the founder effect.