all of the above can be considered ecosystems
Answer:
The cell structure has specific functions that are essential to carry out life's processes. These components include the cell wall, cell membrane, cytoplasm, nucleus, and cell organelles.
Explanation:
This varies from baby to baby, but it is approximated to be the ages of 4 to 7 months.
" C " but I am not a 100% sure
Answer:
Circulatory system remove waste from the cell and provide clean blood to the cell.
Explanation:
During cellular respiration, lungs inhale oxygen which stored in the alveoli. The red blood cells contains hemoglobin that carries deoxygenated blood containing carbondioxide from the cell in the veins to the heart and unload this carbondioxide gas in the alveoli of the lungs and load oxygenated blood having oxygen from the alveoli through capillaries in order to provide oxygen to the cells that is necessary for the survival of humans. Platelets are the type of cells that helps in blood clotting whereas white blood cells provides immunity against pathogens.