Answer:
The outside of the bone consists of a layer of connective tissue called the periosteum. Additionally, the outer shell of the long bone is compact bone, then a deeper layer of cancellous bone (spongy bone) which contains in the medullary cavity the bone marrow.
D. Mechanically and chemically breaks down food for nutrient absorbtion
The two structure that that make up a peanut is the the shell and the seeds. the shell is a woody and hard material that surrounds the seeds, the main purpose of the shell is for protection. the seed is found inside the shell, this is the one that will be eaten or planted
Answer:
The correct answer is producers.
Explanation:
Producers are the organism which can produce their own food by photosynthesis by utilizing water and atmospheric carbon dioxide in presence of sunlight to form glucose molecules.
Producer are placed in the first tropic level of energy pyramid of an ecosystem.
For example grasses act as producers in the grassland ecosystem.
Skin,mouth and sometimes they have gills which they absorb oxygen