Which of the following statements best describes why biologists are currently concerned with global warming and the thawing of permafrost in many areas of the tundra biome?

#Question id: 11424

#10. Ecological Principles

In robert h. Whittaker's approach to relating terrestrial biomes and climatic variables, the principal biomes fall in a triangular area that does not include climates with __________.

#Question id: 11425

#10. Ecological Principles

Walter's climate diagrams allow us to identify any months that have a water deficit. These are months in which:

#Question id: 11426

#10. Ecological Principles

Which of the following biomes is associated with a mediterranean climate?

#Question id: 11442

#10. Ecological Principles

Forests dominated primarily by evergreen trees with abundant lianas and epiphytes are found in which of the following biomes?

#Question id: 11443

#10. Ecological Principles

To qualify as a Biodiversity Hotspot, an area must contain__:

A .At least 1,500 species of endemic vascular plants

B .At least 70 percent land covered by vascular plants

C .At least 25 threatened species of mammals

D .At least one protected area such as national park

 Choose the correct option from the codes given below:

#Question id: 11444

#10. Ecological Principles

Ecologist have proposed following explanation to lead maximize biodiversity at tropic.

A. Higher productivity in the tropics allows for more species present

 B. Old communities have greater species than younger community

 C. Natural enemies such as predators and parasite limit competition in the tropics, which allows more species to coexist

D. Very less intensity of disturbances in the tropics promote high succession diversity