<span>An indicator species is an organism whose presence, absence or abundance reflects a specific environmental condition. Indicator species can signal a change in the biological condition of a particular ecosystem, and thus may be used as a proxy to diagnose the health of an ecosystem. For example, plants or lichens sensitive to heavy metals or acids in precipitation may be indicators of air pollution. Indicator species can also reflect a unique set of environmental qualities or characteristics found in a specific place, such as a unique microclimate. </span>
Answer:
In the explanation!
Explanation:
Well let's think about this. Maybe the people living the rainforests choose to live a much more sustainable than the rest or perhaps they may be part of an indigenous group that depends on their environment for their culture.
My answer would that some people choose that they prefer their way of life or they have simply never heard of the more modern life we live. I don't necessarily see it as bad, especially since most choose this decision to stay out of contact with the outside world. I think that it is bad that some people can't respect their decision but the least we can do it respect their way of life. Those who live in various rainforests must depend on their surroundings and have a strong connection to nature and I most certainly would not move away and lose that connection so I can understand their viewpoint.
Answer:
socialism
Explanation:
Socialism is a populist economic and political system based on public ownership (also known as collective or common ownership) of the means of production. Those means include the machinery, tools, and factories used to produce goods that aim to directly satisfy human needs.
Answer:
Two possible reasons for the massive extinction at the end of the Paleozoic Era are an asteroid collision and massive volcanic eruptions.
Explanation:
The massive extinction that occurred at the end of the Paleozoic Era is the biggest extinction from what is known so far. The majority of the species died out, and whole families of animals and plants were wiped out of the face of the Earth. It was only small and highly adaptable organisms that managed to survive and give rise to the later life-forms.
The two possible reasons for this massive extinction are an asteroid impact and massive volcanic eruptions. An asteroid collision would have created drastic changes in a matter of minutes and hours, with effects lasting for a long period of time, thus eliminating the majority of the life. Massive volcanic eruptions, with the Siberian super-volcano being the prime candidate, may have caused enormous amounts of carbon dioxide and sulfur dioxide to end up in the atmosphere, thus rapidly changing the living conditions on the planet.
Answer:
From left to right, they are Mercury, Venus, Earth, and Mars. Unlike the outer planets, which have many satellites, Mercury and Venus do not have moons, Earth has one, and Mars has two. Of course, the inner planets have shorter orbits around the Sun, and they all spin more slowly. The terrestrial planets are rich in heavier gases and gaseous compounds, such as carbon dioxide, nitrogen, oxygen, ozone, and argon. In contrast, the gas giant atmospheres are composed mostly of hydrogen and helium. The atmospheres of at least the inner planets have evolved since they formed.
Explanation: Hope this helps
