Exam 41: The Distribution of Earths Ecological Systems

Heinrich Walter's studies of terrestrial plant growth were based on the general rule of thumb that if the average temperature in a given month is 15°C,the amount of precipitation needed to ensure growth during that month is _______ mm.

The observation that genetically similar individuals tend to have similar gut flora supports the conclusion that

Air temperature decreases by about 0.8°C for every additional degree north or south of the equator.Washington,D.C. ,is at 38.5°N,and its average temperature is 12.0°C.Atlanta,Georgia,is at 33.5°N.Assuming that the only factor affecting temperature differences between Washington and Atlanta is latitude,what is the expected annual average temperature in Atlanta?

Heinrich Walter developed the climate diagram to

Encompassing all other ecosystems,the _______ is the largest ecosystem on the planet Earth.

If the rotational speed of Earth decreased somewhat,the most likely result would be

In addition to interacting with the physical and chemical factors in the environment,organisms interact with other organisms.Such interactions are called _______ factors.

In which biome is most of Brazil located?

Which level of organization must include members from only a single species?

An assumption underlying Walter's determination of growing seasons is that

Which level of organization consists of an ecosystem minus its physical component?

Which statement about the individual organism is false?

Which statement about mammalian gut bacteria is false?

Suppose the sun provided somewhat less heat.This would likely cause Hadley cells to be _______ and would cause the great deserts to be located _______ the equator.

Which statement about the effect of human activity on ecosystems is false?

As compared with low latitudes,high latitudes receive _______ energy from sunlight over the year because the sun's rays are at _______ angle.

Use the following to answer questions : Suppose that Earth's tilt suddenly shifted,such that it was still tilted in the same direction but at a 26° angle instead of a 23° angle. -Which event would most likely result from such a change in Earth's tilt?

Which term refers to variation in the elevation of Earth's surface?

Use the following to answer questions : Suppose that Earth's tilt suddenly shifted,such that it was still tilted in the same direction but at a 26° angle instead of a 23° angle. -Such a change in Earth's tilt would most likely lead to

Use the following to answer questions : Lean individuals and obese individuals have been shown to differ in terms of the species compositions of their gut flora. -Which observation would best support the conclusion that particular gut flora compositions alter fat metabolism?