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The vas deferens are a fibromuscular tube which connect to the epididymis, and is an excretory duct of the testis.
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The mantle is the mostly-solid bulk of Earth's interior. The mantle lies between Earth's dense, super-heated core and its thin outer layer, the crust. The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth's total volume.
There are several stages to a flowering plant, these are:
Seed germination
Plant growth
Flowering
Fruit production
Seed release
Death
The flowering stage is the state when the behavior of the ants must be observed.