1. Explain in your own words the adaptation used by different groups of snails t

Question

1. Explain in your own words the adaptation used by different groups of snails to adapt to their natural environment. (5 mks)

2. Explain the geological process that determined the current layout of the New York City area. (10 mks)

3. Explain the different modes of preservation of fossils, using specific examples. (9 mks)

4. With the use of examples, outline the differences between igneous, metamorphic and sedimentary rocks. (15 mks)

5. Create a flowchart to identify the following rocks: (25 mks)

Obsidian

Shale

Fossiliferous sedimentary Rocks

Volcanic porphyry

Sandstone

Explanation / Answer

1. Cone snails have cone shaped shells that helps them to dig and burrow deep into the sand.The shell acts like a camouflage and also it helps to preserve the water balance in the snail.

Snails are adapted to breathe in both water and on land through gills and lungs.So they can lay their eggs far from egg eating fish.

Snails go into hibernation and estivation during extreme weather conditions.

Some snails are adapted to self-fertilize .

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