All of the above are true.
A is correct, because, well. We can’t see atoms directly, at least not with our current levels of technology.
B is correct because a model is a representation of something by nature.
C is correct because our knowledge of the atom is still growing, and as we still don’t know about some future atomic developments, it’s called a model so that there’s still flexible room for new discoveries.
Hope this helps!
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The answer is C. During one of his explorations, naturalist
Charles Darwin reached the Islands of the Galapagos. He observed that there are
the same species of animals on different islands, but have noticeable
differences. He found in Galapagos, that there were finches, a type of bird,
with different type of beaks. Birds used their beaks to acquire food. It led
him to discover that species developed over time to fit their way of life in
surviving and getting their food.
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Answer:
A. Destruction of terrestrial biota
Explanation:
all the other answers would decrease the carbon output. thickening of ocean sediments reinforces a carbon reservoir (which stores carbon), reduction in the use of fossil fuels would reduce the amount of carbon emissions, increase in marine biota = increase in carbon storage because marine biota is also a carbon reservoir.
Destruction of terrestrial biota would cause excess output because terrestrial biota is a carbon reservoir, and all of that carbon would be released into the carbon cycle.
The stream has a high volume but a low gradient will run through small rocks and small valley. It slowly runs all over the area. Even though it is low gradient its volume is high so it craves the area and then it changes the land.
<u>Explanation:</u>
- Low gradient streams are less forced but it is wider as it slowly flows through the land. As it is separated from the high gradient stream.
- Then it finds its path and creates it. It will slowly eradicate the soil or land or rock which present in its path.
- Day by day the flow of large quantity of water will change the position of the land.
- Before reaching the sea, it will cover up the river.
