Explanation:
the answer should be d because of the concentration gradient see if that makes sense
Answer:
The circulatory system circulates the blood to the whole body.
The respiratory system brings oxygen to the blood, and the circulatory system circulates the oxygenated blood to the cells.
Explanation:
Answer:
a)species x is anaerobic, and species y is aerobic
The answer is b because diffusion is the transfer of particals from high to low and osmosis involves water
Answer:
long term heart promblems
long term lungs and liver
Explanation:
