The thermodynamic barrier that must be overcome before products are formed in spontaneous reaction is activation energy.
The activation energy is the maximum amount of extra energy that is required by a reacting molecules to get converted into product. It is the minimum energy that is required or needed to activate or energize molecules or atoms.
It is needed in the reaction so that reactants can move together and overcome forces of repulsion and start bond breaking.
Reactant is the substance that takes part in and that undergoes change during a reaction.
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Answer:
A) With the closer spacing for the rows, the growing corn plants will quickly form a dense canopy of leaves, which will, by shading the ground, minimize the need for costly weed control and irrigation.
Explanation:
If the space among plants is less, the shadow that they are going to produce is going to reduce the need of water, so they production will rise and the cost to maintain the crops will be less, so the producer can double the profits.
Answer:
B) remove contaminating microorganisms and initiate repair of damaged tissues.
Explanation:
Schematically we can divide the inflammation into five stages:
1- Release of mediators. They are molecules, most of them, of elementary structure that are released or
synthesized by the mast cell under the action of certain stimuli.
2- Effect of mediators. Once released, these molecules produce vascular alterations and effects
Chemotactics that favor the arrival of molecules and immune cells to the inflammatory focus.
3- Arrival of molecules and immune cells to the inflammatory focus. They come mostly from the blood, but
also from the areas surrounding the focus.
4- Regulation of the inflammatory process. Like most of the immune responses, the inflammatory phenomenon
It also integrates a series of inhibitory mechanisms aimed at finalizing or balancing the process.
5- Repair. Phase consisting of phenomena that will determine the total or partial repair of tissues
damaged by the aggressor or by the inflammatory response itself.
If the substances density is less than that of water it will float, whereas if it is greater it will sink.