They have harvested potato's carrots, and more for it was thanksgiving.
Answer:
yes it is a useful mechanism
For the pheasant question, it would be the top right graph as this shows an increase, then a further increase in the population of pheasants.
For the population of the world graph, it shows positive exponential growth as it is a large amount of growth within a small time period
<em>1. sólido, líquido, gas, plasma</em>
<em>2. volumen, solubilidad, presión de vapor, color o conductividad eléctrica.</em>
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<em>cómo ha sido su día? :)</em>