Alveolar walls are thin to enable the quick passage of oxygen in and out of the lungs. The lungs works hand-in-hand with the heart and also is responsible in converting blood that's de-oxygenated into an oxygenated blood that is usable by the organ systems of the body. The alveolar walls are also designed to have thin membranes so that it can expand and constrict quickly allowing us to breather properly.
Answer: Divergence evolution or divergent selection
Explanation:
The divergent evolution/divergent selection can be defined as the process of accumulation of differences between the related populations lies within the species. This process leads to speciation.
This occurs when the two populations of the same species get separated by a geographic barrier. The separated members of the same species experience different selective pressure that are responsible for adaptation in the new environment.
Answer: A transposable element is introduced into the regulatory region of the eye color gene and causes gene expression to be reduced, which results in white eyes with red spots
Carbon cycle :
- CO2 is given out when organism breathe
- Plants gather this CO2 to produce oxygen
- Oxygen that is produced by the plants is used for other organism's breathing which will given out another CO2 and repeat the cycle
Water Cycle :
- Water from the sea and lake is evaporated and Turned into Clouds
- When atmosphere cool it down, these clouds will condense and turn into rain
- Eventually this rain will flow back to the lake or sea and it will repeat the cycle
hope this helps
