how How did the Bolshevik Revolution impact Russia

Human Ecology

2007 What are two benefits to this planet that insects provide

Insects constitute 95 of all animal species on the planet (1 , 2007 First and foremost , they play a crucial role in the product chain especially in the woods , as they are the critical source of food for many animals , specifically vertebrates and invertebrates . They are also very important for pollinating the flowers , so that they can bloom

Secondly , insects participate in the breakdown of animal and plant matter , so that they can disintegrate and increase the fertility of

the soil (ibid . Together with worms and other microorganisms they transform fallen leaves and animal dung into necessary nutrients for the plants But for the insects , the ground would be everywhere covered with dung leaf litter and corpses of dead animals , which would lead to death of all living creatures . This makes insects one of the most important elements in the land-based eco-systems , as they transfer substance and energy , utilising almost all substance , supplied by animals and plants Therefore , many insects are rightfully called the sanitars

Explain why microbes are the real rulers of the earth

Microbes make up approximately 90 of the biomass of the planet (without taking into the account cellulose (2 , 2007 . Microbes can be considered to be the most important creatures on the earth , because they have created and still maintain the atmosphere of the planet , which is of crucial importance for survival of flora and fauna , as well as human beings . To be more specific , they are accountable for cycling important constituents of the atmosphere , such as oxygen and hydrogen . With the help of microbes , these elements appear in the soil and make it fertile so that the plants can grow . The plants , in their turn produce the energy , which is crucial for animals and human beings

Microbes also played a crucial role in the process of photosynthesis Algae and plants gained their ability to photosynthesis as a result of endosymbiosis with cyanobacteria . Furthermore , microbes are responsible for recycling atmospheric gases that create the greenhouse effect , such as water vapor , carbon dioxide , nitrous oxide , methane , and ozone (2 2007 . But for this recycling , the greenhouse gases would disappear and the temperature of the Earth would fall by 60 F (ibid . To sum up microbes are crucial in their number and importance , as the atmosphere of the Earth would not exist , and thus there would probably be no complicated living forms on the planet

List the `Big Five` underlying causes of environmental problems

The major reason for environmental problems is first and foremost the increase of the planet 's population , which demands manufacture and consumption of more and more material products (that is in itself the second reason . The third cause is the increase of the gap between the rich and the poor people : about 20 of people from rich countries are responsible for about 85 of the private consumption in the whole world (3 , 2007 . The fourth reason is unsustainable development of the humanity...