What environmental factors enable the species that are common in Mohn Hill Natural Area and Synder-Middleswarth Natural Area to exist in both areas.

40. Why is biodiversity important?   Increased biodiversity can lead to improved and functioning ecosystem services. All of the choices are true. A loss of biodiversity can be bad for humans, either directly or indirectly. Increased biodiversity can make a habitat more stable.

1. Cheatgrass (Bromus tectorum) is a species of fire-adapted grass that was Introduced by humans to the western United States in the 1880's. Fire-adapted specles not only survive frequent fires, some require fire to release nutrlents or allow seeds to germinate. The Great Basin Desert is characterized by sagebrush and cold temperatures. The Mojave Desert is characterized by creosote bush, cacti, and yucca plants and very hot temperatures. Both deserts get very infrequent ralnfall. Deserts are not fire- adapted ecosystems. Since Cheatgrass was introduced, It has invaded both the Great Basin and Mojave Deserts, where fires now occur as often as every 3 to 6 years. Select any statement that is likely to be true regarding the effects of the inrtoduction of cheatgrass. Fires destroy cheatgrass and halt its invasion. Desert plants will rapidly adapt to frequent fires. Cheatgrass seeds survive and spread with each fire cycle. The frequent fires help cheatgrass expand its range. Natural…

5 of 6 100% 28. The best term to describe purple loosestrife would be I A. non-native B. exotic C. invasive D. parasite 29. In some parts of the world, forests are being cut down and burned to clear land for new homes and new farmland. A negative effect of these activities might be A. an increase in edge effect B. a decrease in the average temperature of the atmosphere C. an increase in biodiversity of the deforested areas 30. Which action by humans could improve the auality of the air? I am fini Cop

14.Why is protecting forests important to combating climate change, and in supporting the hydrologiccycle? 15.Why is clear-cutting considered an unsustainable practice, ecologically speaking? (give multiplereasons)

2. Human causes of deforestation include all of the following except: A. insect defoliation of trees (by larval infections like the gypsy moth) B. overharvesting of lumber (for making furniture) C. slash-and-burn agriculture (for farming) D. overharvesting of timber (for making paper) E. overharvesting of firewood (for cooking and heating)

6) The regulations establishing territorial zones around a country can be found in what document?

2. All but one species of large birds native to New Zealand's tropical forests are now extinct. Numbers of the one surviving species, the kereru (Hemiphaga novae- seelandiae), are declining rapidly due to habitat loss, poaching, predation, and interspecies competition that wiped out the other native birds. The keruru is the only n. ne remaining dispersal agent on for several native trees that produce big seeds and fruits, th mainly because it is the only remain- ing species that can swallow big fruits (left) and expel big ops seeds whole. One of these trees, the puriri (Vitex lucens), is New Zealand's most valued hardwood. Explain, in terms of natural selection, what would happen to puriri trees in New Zealand if the kereru becomes extinct. ower

3. Which of the following factors is thought to be the most protective against colony collapse disorder (CCD) in pollinating honeybees? A. fungus infections B. biodiversity of flowers C. virus infections D. pesticide exposure E. malnutrition

4. Which of the following restoration processes is starting to improve the Florida Everglades? A. more stringent laws to control pesticide and fertilizer use have cut down on pollution B. development projects have drained portions of the Everglades for farms and urban use C. flood controls on water entering the Everglades have reduced levels of fresh water D. diversion of water from the Everglades to coastal cities has reduced stream diversity E. invasive species (like the Burmese python) are competing with native species