Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Prey attract predators.
Problem: Here is one way in which nature regulates the size of animal populations: high population density attracts predators, who remove a higher proportion of the population than when the density of the prey is low. One study looked at kelp perch and their common predator, the kelp bass. The researcher set up four large circular pens on sandy ocean bottom in Southern California. He chose young perch at random from a large group and placed 10, 20, 40, and 60 perch in the four pens. Then he dropped the nets protecting the pens, allowing bass to swarm in, and counted the perch left after 2 hours. Here are data on the proportions of perch eaten in four repetitions of this setup:
Perch
Proportion killed
10
0.0
0.1
0.3
20
0.2
0.6
40
0.075
0.725
60
0.517
0.55
0.7
0.817
Do the data support the principle that "more prey attract more predators, who drive down the number of prey"?
Given taht 200 W/m^2 of randomly polarized light is incidentnormally on a stack of ideal linear polarizers that are positionedone behind the other with the transmission axis first vertical, How much light emerges
How does graphene support Induced pluripotent stem cells culture and do different forms of graphene lead to distinct cell proliferation and differentiation characteristics
A 0.954 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. What is the average current supplied to the car's motor
question1the large quadriceps muscle in upper leg terminates at its lower end in a tendon attached to upper end of the
A fireworks rocket is launched vertically into the night dky with an initial speed of 47.6m/s. The rocket coasts after beinglaunched, then explodes and breaks into 2 pieces of equal mass 3slater.
The compound gear to the right is located inside a truck, whose engine rotates the driving gear with a torque of 816 N·m. find the moments of inertia of both the large and small gears
What is the smallest thickness of a soap film (n=1.33) thatwould appear black if illuminated with 480-nm light? Assume thereis air on both sides of the soap film
In particular, if a 2.000Å (.2nm) photon interacts with the bound electron in an hydrogen atom (binding energy 13.6 eV) with a Compton collision. What is the energy of the scattered photon
A large water tank has an inlet pipe and an outlet pipe. The inlet pipe has a diameter of 2.05 cm and is 2.15 m above the bottom of the tank. What is the gauge pressure in the outlet pipe
A long thick cylindrical wire of radius 2.0 cm carries a current of 40.0 A that is uniformly distributed over a cross section perpendicular to the axis of the wire. What Is the magnitude of the magnetic field at a point which is 1.5 cm from the ax..
In a particular Compton Effect experiment, it is observed that the wavelength of the scattered photon is equal to two times that of the incident photon when the photon detector is placed at Θ =60o. What is the wavelength of the incident photon
A girl rides the escalator that moves foward at a constant speed. As the girl raises, how do her gravitational energy and kinetic energy change.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd