Answer:
A) Radius of vessel
Explanation:
The right answer is B
The development towards 1.4 Ga of eukaryotes, aerobic organisms such as unicellular algae, will be decisive for the oxygenation of the Earth's atmosphere.
The first multicellular organism is a red alga dating back to 1200 Ma during the Mesoproterozoic era (part of Precambrians). Various forms of life with soft bodies dated between 600 and 541 Ma constitute what is called the Vendian fauna, that is to say the fauna of the Ediacarien.
The appearance of a great diversity of small shelly fauna from 541 Ma will mark what is called the Cambrian explosion.
competitive exclusion
predator-prey
niche
Answer:
the correct answer is A competitive exclusion
Explanation:
Geological change
Both a and b
None of the above
Answer:
Burning fossil fuels is different from other processes that cycle carbon in environments on Earth in the following ways:
Speed: Burning fossil fuels releases carbon dioxide into the atmosphere much more quickly than other natural processes. For example, it takes millions of years for carbon dioxide to be released from rocks and sediments through natural processes, but fossil fuels can be burned in a matter of seconds.
Scale: The amount of carbon dioxide released into the atmosphere from burning fossil fuels is much greater than the amount released from other natural processes. In 2019, humans emitted about 38 billion tons of carbon dioxide into the atmosphere, of which about 89% came from burning fossil fuels.
Location: Burning fossil fuels releases carbon dioxide into the atmosphere in specific locations, such as cities and power plants. This can lead to high concentrations of carbon dioxide in certain areas, which can have negative impacts on human health and the environment.
Other processes that cycle carbon in environments on Earth include:
Photosynthesis: Plants use carbon dioxide from the atmosphere to produce food.
Respiration: Plants and animals release carbon dioxide into the atmosphere when they breathe.
Decomposition: When plants and animals die, their bodies are decomposed by bacteria and fungi, which release carbon dioxide into the atmosphere.
Weathering: Rocks and sediments are weathered over time, releasing carbon dioxide into the atmosphere.
Volcanic eruptions: Volcanic eruptions can release large amounts of carbon dioxide into the atmosphere.
These natural processes cycle carbon between the atmosphere, land, and oceans. The carbon cycle is a natural process that has been happening for millions of years. However, human activities, such as burning fossil fuels, are disrupting the carbon cycle and causing carbon dioxide levels in the atmosphere to rise. This is leading to climate change, which is having negative impacts on the planet and its inhabitants.
To reduce the impact of burning fossil fuels on the carbon cycle, we can transition to renewable energy sources, such as solar and wind power. We can also improve energy efficiency and reduce our reliance on fossil fuels.
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