Answer:
no
Explanation:
<h3>they just can't <em><u>
keep</u></em> breathing without them</h3>
Answer:
B. Carbohydrates provide energy for living things.
Explanation:
Answer:
portal system is the answer
Multicellular organisms<span> can be much larger and more complex. This is because the cells of the </span>organism<span> have specialised into many </span>differenttypes of cells such as nerve cells, blood cells, muscle cells all performingdifferent<span> functions.</span>
The respiratory system takes oxygen from the air and sends it from the alveoli to the circulatory system. The circulatory system carries the oxygen and glucose to your cells for energy. And lastly, the digestive system to carry the nutrients and remove the waste.
