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TLS Online TPP Program
#Question id: 12577
#XL - R Botany
During a field trip, an instructor touched a moth resting on a tree trunk. The moth raised its forewings to reveal large eyespots on its hind wings. The instructor asked why the moth lifted its wings. One student answered that sensory receptors had fired and triggered a neuronal reflex culminating in the contraction of certain muscles. A second student responded that the behaviour might frighten predators. Which statement best describes these explanations?
TLS Online TPP Program
#Question id: 12579
#XL - R Botany
Which of the following probably contains the highest concentration of toxic pollutants (biological magnification)?
TLS Online TPP Program
#Question id: 12580
#XL - R Botany
When levels of CO2 are experimentally increased, C3 plants generally respond with a greater increase in productivity than C4 plants. This is because
TLS Online TPP Program
#Question id: 12582
#XL - R Botany
Which of the following describes carbon dioxide, methane, and water vapor re-reflecting infrared radiation back toward Earth?
TLS Online TPP Program
#Question id: 12583
#XL - R Botany
Which of the following is caused by excessive nutrient runoff into lakes?
TLS Online TPP Program
#Question id: 12584
#XL - T Zoology
Which of the following causes excessively high levels of toxic chemicals in fish-eating birds?