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No, it is kind of a parasite I guess. The cockroach eats the food brought in by the human, and it brings germs that hurt the human.

1.) Some bird populations have decreased because their food source has flourished at a different time. What is their food source, and how has global warming caused this problem?
2.) How are ecological niches affected by global climate change, and how can invasive species profit from this?

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imagine tomorrow every land animal except chickens went extinct, then you come back and look at the earth in say 100,000,000 years time, will the chickens have filled all ecological niches left by the other animals by then?

According to the multiregional model for human origins,
A. Homo sapiens arose in Africa and in Asia at about the same time from ancestral populations of H. neanderthalensis.
B. populations of Homo erectus in different regions faced different selection pressures and they gave rise to races of Homo sapiens.
C. Homo sapiens evolved in Africa but then established multiregional, separately evolving populations after migrating to Europe, Asia, Australia, and North America.
D. the human evolutionary tree is really more like a bush because our ancestors evolved in many different regions and filled numerous ecological niches.

Please help me answer these questions. These questions had to be answered after watching the movie ‘An Inconvenient Truth’. I have done a lot of research but I could not find the answers to these questions. Please do try to answer all the questions (even if you’re not sure) but if even if you can answer a few, it would be greatly appreciated.
1. Who was the first person to propose measuring CO2 levels in the atmosphere?
2. Why do CO2 levels in the atmosphere have such drastic fluctuations within a year?
3. What trends can be seen in CO2 levels from 1958 – 2005?
4. How are scientist able to determine temperature and CO2 levels from specific years so long ago?
5. How recently did the 10 hottest years ever recorded occur?
6. Why did Katrina change from a category 1 hurricane before reaching New Orleans?
7. The ocean currents are interconnected via a conveyor type system. What would happen to this system if Greenland had to melt and why?
8.Describe 3 ecological niches that are affected by global warming?
Thank you so much 🙂