Which process breaks down marble and limestone

Answers

Answer 1
Answer: Chemical ,weathering  by acid rain  

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How are elevation and climate closely related

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The higher the elevation, the colder the climate.

(example: mount everest has a very high elevation and its freezing, arizona has a lower elevation and its very hot)

I need an answer for this in the next 30 minutes PLEASE HELP  20points What are some benefits of having Fair Trade in Canada or in the world?

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Some Benefits of having fair trade in Canada or in the world are Stable Prices, Partnership, Fairtrade premium and empowerment of farmers and workers.  

what might be a difference between contour lines on a mountain and contour lines in a broad, flat valley

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This diagram really helps.

Hope it helps you!

What did the Dutch name their settlement located on Manhattan Island?

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The Dutch named their settlement located on Manhattan Island as New Amsterdam. This also served as the colonial seat of New Netherland Territory, however their reign over the island was short lived, as they exchanged it for the control of the Spice Islands.

Explain why shorelines are always changing

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The shoreline is always changing because of the time of day.E-MAIL if you like the information i gave you.
They are always changing due to the effects of erosion and weathering.

Erosion:

- Attrition - rocks smashing into each other and breaking down becoming smaller and smoother

- Solution - soluble particles dissolving

- Abrasion - rocks that are in the sea wearing down the sea bed (although this isn't very common)

- Hydraulic Action - when there are cracks in the cliffs, water can push air into them which creates pressure causing the cracks to get bigger

Deposition:

- Sediments get deposited onto the beaches and other areas, thus adding to the shoreline

Weathering:

- Physical: temperature, wind, rain, waves, freeze-thaw

- Biological: by plants and/or animals

- Chemical: acidic rain

Hope this is what you wanted and I hope it helps. :)

Briefly describe what Charles Darwin observed about the finches on the Galapagos island?

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He observed that even though the finches had the same basic ancestry and while only living a handful of miles apart they had developed very specific beaks for their differing habitats. This is where most people view him as finding the basis for natural selection and evolution.