Optimal Foraging Introduction Hunting and escape strategies of predators and prey are probably the result of a coevolutionary arms race (Dawkins 1999). There is an economic approach that the scientific community can use to look at what kinds of prey preds choose to eat. Elner and Hughes (1978) found that when given a choice of different sized mussels‚ shore crabs Carcinus maenus selected the prey that gives them the highest rate of return. Very small mussels were easy to open but held less nutritional
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a schoo Chapter 35 The Plant Body 1. Describe and compare the three basic organs of vascular plants. Explain how these basic organs are interdependent. The three basic organs of a vascular plant are the stems‚ leaves‚ and roots. The stems consist of nodes‚ where leaves attach‚ and internodes between the nodes. The stem is responsible for elongation of the plant and acts as a central axis for other organs to attach to. The roots help to anchor the plant as well as absorb water and nutrients
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Rice hulls Rice hulls (or rice husks) are the hard protecting coverings of grains of rice. In addition to protecting rice during the growing season‚ rice hulls can be put to use as building material‚ fertilizer‚ insulation material‚ or fuel. Production Rice hulls are the coating for the seeds‚ or grains‚ of the rice plant. To protect the seed during the growing season‚ the hull forms from hard materials‚ including opaline silica and lignin. The hull is mostly indigestible to humans. One practice
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300 office tips • Special feature Microsoft Excel 75 tips and tricks for your favourite spreadsheet. You can convert rows to columns (and columns to rows) by highlighting the cells you want to switch around‚ clicking on Edit‚ Copy‚ selecting a new cell and then going to Edit‚ Paste Special… Finally‚ place a tick in the Transpose box on the dialog box and click on OK. 1 Convert rows to columns the running total of the figures in A1 to A5 in the adjacent column. Enter in a cell the formula
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which he won the Nobel prize in physics in 1986. 4 kinds of microscope Compound Microscope = is a microscope that uses multiple lenses to collect light from the sample and then a separate set of lenses to focus the light into the eye or camera. Dissecting Microscope (stereo or stereoscopic) = is an optical microscope variant designed for low magnification observation of a sample using incident light illumination rather than transillumination. Scanning Electron Microscope (SEM) = is a type of electron
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Factors that determine investment: 1. Marginal efficiency of capital:- The marginal efficiency of capital is called the expected return of capital or expected rate of profit on an investment. PV = R + R + R + …………… + R (1+i) (1+i) (1+i) (1+i) Keynes define the marginal efficiency of capital as “ MEC is being equal to that rate of discount which make the present value of
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Utilitarianism is a consequentialist theory‚ which means that it judges the morality of an action based on the consequences that follow from it rather than on external moral duties. Philosophers who adhere to utilitarianism regard the maximisation of utility as the key determent for understanding whether an action is right or not . In this essay I will argue that the amount of utility produces by an action is not an ideal way of determining its morality. This will be done by firstly clarifying the
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surface of water and mud. Algae were evolving at the water’s edge‚ and one group – probably the charophytes – gave rise to plants. Cooksonia‚ a simple branching plant a few centimeters tall‚ evolved by 430 million years ago. It took another 160 million years for the taller Psilophyton to evolve. Then the evolutionary pace picked up. It took only 60 million years for plants radiate from the swampy lowlands to high mountains and nearly all places in between. They did so through modifications in
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DBM/381 DBMS – Access versus Excel Database management systems (DBMS) are a set of computer programs that allow businesses to place control of the creation‚ maintenance‚ and use of a database in the hands of database administrators. These software packages allow different user application programs access to the integrated collection of files called databases. Spreadsheet applications are programs that allow a person to create and manipulate spreadsheets on a computer. This paper will
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EVALUATION OF VIRGIN GROUP ACCORDING TO THE 7-S MODEL. According to Waterman and others‚ 7-s model is a framework for change identifying seven key factors that adversely affect change in an organization. Virgin Group can be analyzed according to this model as follows: 1. STAFF The staff of Virgin Group is highly motivated. Richard Branson‚ the owner of the group serves as a good example to the employees as he leads by example by not living an extravagant life which may make the employees
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