Answer its saying the words im trying to use are inapppropriatte but its the anwer srry
Explanation:
The best model there is for the carbon cycle
Answer:
All amino acids share a general structure composed of four groups of molecules: a central alpha-carbon with a hydrogen atom, an amine group, a carboxyl group, and a side chain.
Sponges are sessile animals that have specialized cells called amoebocytes and choanocytes.
Sponges (phylum Porifera) are one of the simpllest multicellular organisms (first to branch off the evolutionary tree from the common ancestor of all animals) that have bodies full of pores and channels allowing water to circulate through them. Sponges’ s structure consists of two thin layers of cells and mesohyl layer between them. They don’ t have real tissues or organ systems such as nervous, digestive or circulatory systems. Constant water flow through their openings and pores obtain food and oxygen and remove wastes.
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Opposable thumb
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- An opposable thumb is a thumb that can be placed opposite the fingers of the same hand. Opposable thumbs allow the digits to grasp and handle objects and are characteristic of primates.
- Opposable thumbs are one of the distinguishing features of primates. Opposable thumbs of human beings allow them to use tools.