The oak tree pathogen Phytophthora ramorum has migrated 650 km in ten years. West Nile virus spread from New York State to 46 others states in five years. The difference in the rate of spread is probably related to

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#Question id: 9571

#10. Ecological Principles

All homeostatic systems used by organisms to regulate body temperature are described by which of the following?

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#Question id: 17813

#7. System Physiology – Animal

During the stress response, cortisol triggers the release of ______.

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#7. System Physiology – Animal

The amino acid tyrosine is a starting substrate for the synthesis of :

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#Aptitude

Which of the following is the appropriate definition of a computer?

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#Question id: 5740

#8. Inheritance Biology

Pollen from one species germinates on the stigma of another related species and sexually fertilizes the ovule. Most of the resulting plants are sterile but some of the resulting offspring undergo chromosome duplication resulting fertile plants. The fertile offspring are known as