Hydroelectric Power
The benefits are: <span><span>
1. </span>Hydroelectric power is mainly a renewable source of energy. It relies on the stream cycle of water which do not cause pollution.</span>
<span><span>2. </span>Hydroelectric power also helps and promote water reservoir and storage.</span>
The cost are:
<span><span>1. </span>0.85 cents per kWh is the average cost in the US.</span><span><span>
2. </span>Conventional installation costs $1,000-$5,000</span>
Geothermal Power
The benefits are: <span><span>
1. </span>There is no pollution</span><span><span>
2. </span>We lessen the utilization of fossil fuels</span>
The costs are: <span><span>
1. </span>$0.03<span> to $0.035 per kWh is the cost of electricity by The Geysers.</span></span>
<span><span>2. </span> <span>$20,000 to $25,000 costs to build this power plant
Hope this helps.</span></span>
I think it's A becuse the stageof meiosis is cytokinsis
Answer:
The simultaneous effect of a predator population on a prey population and a prey population on a predator population over time.
Explanation:
The mathematical models of Lotka-Volterra equations explain the existing interaction between species in which prey and predator influence and affect each other. The model follows a few assumptions,
- The ecosystem is isolated and closed. There is no migration.
- The whole individuals are reproductively equivalent.
- In the absence of the predator, prey shows an exponential growth rate. The prey is in the ideal environment.
- When there is no prey, the predator population decreases exponentially because of the lack of food. The predator environment is ideal, but it is limited by prey density.
- The predation rate is proportional to the encounters rate, which also depends on density.
- The predators affect the prey populations, inducing its decrease proportionally to the number of prey and predators present.
- The prey population also influences the predator population proportionally to the number of encounters between the two species.
In these equations, the variable D is the number of predators, and P the number of prey items.
The parameters are always constant:
• r1: prey growth rate.
• a1: predator hunting success.
• r2: predator growth rate.
• a2: the success of the predator in hunting and feeding.
In nature, many factors affect interactions, such as dense-dependent factors and dense-independent factors. Also, in reality, there are stochastic factors. Stochasticity refers to the variability in the system involving those factors that are affecting or influencing population growth. Stochasticity might be related to good years and bad years for population growth.
In real situations, the compliance of the whole assumption does not occur. The previously mentioned constants might vary, constantly changing the interaction between the predator and the prey. These parameters change in different degrees, resulting in varying circumstances for both species.
<span>The lab equipment used to allow for the growth of microorganisms without the aid of oxygen are petri dishes. They are air-tight, short, round disk shaped dishes with a lid.</span>
