If it goes in the nostrils the air is warmed and humidified. The tiny hairs) protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.
31. Carbon and hydrogen
32. Glycerol, fatty acid
33. Neighboring carbons, saturated
34. Carbon atoms, unsaturated
Didn't get 35
Answer:
The correct option is: (A) stem cells
Explanation:
The bone marrow is a semi-solid tissue which is generally found in the spongy portions of the bones. In the bone marrow, all the blood cells are produced from the unspecialized precursor cells, which are known as the stem cells. Firstly, the stem cells divide and form the immature blood cells. These immature blood cells then further divide and mature to form the mature blood cells.
Therefore, the stem cells are the precursor cells which transform and mature to form the blood cells.
B. skeletal and nervous system
Answer:Number one is "D"
Explanation:
Good thing i'm learning about this right now, Cellular Respiration needs Oxygen and hydrogen and photosynthesis needs Carbon and hydrogen.
