Solar energy is more Natural since it comes from the sun and easier to harness, while chemical energy is Dangerous because it may fail and cause damage.
Answer:
An increase in membrane thickness
Explanation:
Gaseous exchange occurs in relation to Fick's Law which states:
'the rate of diffusion is proportional to both the surface area and concentration difference and is inversely proportional to the thickness of the membrane
Therefore, based on this law, an increase in the thickness of the membrane will result in a decreased diffusion rate which will in turn slow down the process of gaseous exchange
There are sutures (lines of fusion between bones) associated with cranial (skull) bones.
Your answer would be... B. The climate on Earth has changed over time.
