Answer:
Faciliated diffusion, which requires a carrier protein but no cellular energy. The energy for this process is provided by the concentration gradient of the substance being transported.
Answer: Fossils of limb structures provide evidence that ancient and modern tetrapods are related because it backs up the fact that both ancient and modern tetrapods follow the one bone two bone many bone digit pattern. It suggests to how modern and ancient tetrapods have the ancestry which come from early tetrapods.
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Wind is considered an abiotic factor because it is not a living organism.
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Answer:
Explanation:
Las funciones digestivas de la saliva incluyen humedecer los alimentos y ayudar a crear un bolo alimenticio, para que se pueda tragar fácilmente. La saliva contiene la enzima amilasa que descompone algunos almidones en maltosa y dextrina. Por lo tanto, la digestión de los alimentos ocurre dentro de la boca, incluso antes de que los alimentos lleguen al estómago.
