- A fertilized egg with an unmatched pair of genes is said to be
- Chimpanzees have a relatively low birth rate. They care for their young, and most chimps live a long life. The chimp survivorship curve would look like _____________________.
- Which of the following is the definition of "osteoclast"?
- Which of the following refers to "an organism's ability to make its own food"?
- The largest reservoir of phosphorus on a global scale is __________.
- A palatable (good-tasting) prey species may defend itself against predation by __________.
- Which nutrient is most often limiting for plants?
- The intermediate disturbance hypothesis states that moderate levels of disturbance maximize __________.
- The units of inheritance are called __________.
- What percentage of Earth's water is freshwater?
- Which biologist described a plant community as having characteristics of a superorganism?
- Which of the following is a consequence of the second law of thermodynamics?
- Eutrophication of a lake increases which of the following?
- Ecologists remove a single species from a tide pool community and later observe a substantial decline in the tide pool's species diversity. The soundest conclusion is that the removed species was __________.
- The concept of "descent with modification" was proposed by __________
- Two species, A and B, occupy adjoining environmental patches that differ in several abiotic factors. When species A is experimentally removed from a portion of its patch, species B colonizes the vacated area and thrives. When species B is experimentally removed from a portion of its patch, species A does not successfully colonize the area. From these results you might conclude that __________.
- In which of the following groups of organisms would you expect production efficiency to be the greatest?
- Rates of decomposition are generally highest in areas that are __________.
- A major explanation for the decline in species richness along an equatorial-polar gradient is the correlation of high levels of solar radiation and water availability with diversity. Which of the following factors is also thought to contribute to the high species richness of tropical communities?
- Primary production in oceans is limited by the availability of __________.