Wolves are predators of moose in a certain ecosystem. Which statement is true about the predator-prey relationship?
a) it represents competition between species
b) it is highly effective at controlling populations of both species
c) it is usually a cause of extinction of one of the species
d) it contributes to exponential growth of the predator species
Ans: b) it is highly effective at controlling populations of both species
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What can scientists study in the fossil record to learn about the distribution of grasses in the past? Select all correct choices
A. herbivore teeth B. herbivore hooves C. stromatolites D. phytoliths E. the ratio of different carbon isotopes in fossils
Which of the following is false?
What will be an ideal response?
Fats and oils contain more energy per gram than proteins or carbohydrates
Indicate whether the statement is true or false
Which microscope uses two beams of light to produce a three-dimensional color image?
A) fluorescence microscope B) phase-contrast microscope C) darkfield microscope D) DIC microscope E) electron microscope