Blood cells carry oxygen to the rest of the cells in the body, and hemoglobin can help it do so. But in order for the hemoglobin to be effective enough, the blood cell has to be a certain kind of shape.
<span>Keep in mind that muscle cells don't carry oxygen and that they have different structure which helps in flexing and moving around only. </span>
Answer: 8- D
9- C
Explanation: always remember the number above is the atomic number
Urban diseases and causes or mortality are more likely to be those spread by person to person, crowding.
Answer:
True
Explanation:
All the cells in a living organism undergo cellular respiration to extract the chemical energy from food molecules and convert it into usable energy form of ATP.
The food molecules having chemical energy are oxidized to produce energy that can be used for all cellular metabolism processes and other energetic reactions required for life
Later on this ATP's energy is used for building new molecules and transporting materials.
Hence, given statement is true
Answer:
A
Explanation:
Less pollution means less greenhouse gasses being emitted.