What effect can fertilizer runoff have on an aquatic ecosystem? a. increased plant growth leading to a decrease in fish populati
ons b. increased plant growth leading to an increase in fish populations c. decreased plant growth leading to a decrease in fish populations d. decreased plant growth leading to an increase in fish populations
A) An excessive amount of fertilizer which has run off fields into aquatic areas causes increased plant growth, often on plants such as algae which is common on the top of fairly still water. This decreases the light which reaches the water so can change the temperature and alter the plant life at the bottom of the pond / lake / water area so negatively alters the ecosystem.
A) An excessive amount of fertilizer which has run off fields into aquatic areas causes increased plant growth, often on plants such as algae which is common on the top of fairly still water. This decreases the light which reaches the water so can change the temperature and alter the plant life at the bottom of the pond / lake / water area so negatively alters the ecosystem.
Retroviruses appear to cause cancer in their host by mutating the host gene sequences allowing for the activation of some potentially oncogenic genes to be expressed. They do this by inserting their proviral DNA into the host genome at specific regulatory sequences deregulating cellular signaling and transcriptional controls.
An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure. 17.5 “Temperature and Reaction Rate”).
GreaterSurfaceArea
The rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. ... more particles are exposed to the other reactant. there are more collisions. the rate of reaction increases.
Catalysts
A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism.
