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1. What is the definition of a community in environmental science? Give an example of a community. What does a species first have to do in order to become a member of a community?
2. What is a habitat? Under what conditions can two or more species inhabit a habitat? Be specific and give examples.
3. Under what conditions is species diversity the greatest?
4. Explain the concepts of protocooperation, mutualism, commensalism, parasitism? Give an example of each. What is tolerance? Give an example. How do interactions among species influence what exists in a community? Give some examples of positive and negative interactions. How does predation affect a community? What happens when a keystone predator is removed from a community?
5. What causes community changes? Compare and contrast primary succession and secondary succession. Be specific and give examples.
The modulus of bone mineral is 114-130 GPa. The modulus of cortical (normal) bone is 19-20 GPa.
If an amplifier has an internal resistance of 500O, what turns ratio must be used to get maximum power transfer to a load of 4O.
Given it is observed that the bulb is still lit at the end of the weekend, what is the probability that the bulb was an type bulb?
A series circuit has the following components. For each, calculate the voltage across it and the current through it. Component voltage Current 9 V source 9V 9.1 Kohm resistor 1 Kohm resistor 2.2 kohm resistor.
Determine the circuit's initial value, final value, the dominant exponential's time constant, and the likely case (A, B, or C) of the circuit response.
A square of charge Q lies in the x-y plane with sides of length L, centered at the origin. A point P lies a distance z above the origin along the z-axis. Calculate the E-field at P. Put the final answer in terms of Q, not the charge density.
purposethe aim of this experiment is to develop a bipolar transistor amplifier with a voltage gain of minus 25. the
Derive the relationship between output phase angle and input phase angle.
A 10 ohm resistor and 10 henry inductor are attached in series to a 10 volt DC supply. If the current i(0)=2.5 amperes, what is the current after 1 second
For a RC circuit, we can use Laplace transforms to show that when we apply a step input of 5V, the voltage across the capacitor rises exponentially
From this, compute and plot the power spectral density of the modulated waveform. Include the special case of ordinary MSK in your simulation so that you can compare the spectra of GMSK and MSK for several BTB products.
Three parts of asingle-phase electric system are designated A,B and C and areconnected to each other through transformers. Neglect transformerresistance and magnetizing current. The transformers are rated as follows
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