Answer:
2. macroevolution
Explanation:
Macroevolution refers to the evolutionary processes that lead to the appearance/extinction of groups larger than individual species. Macroevolutionary processes include speciation, species selection and punctuated equilibrium. The punctuated equilibrium processes are represented by phenomena such as those cases described above. These evolutionary processes are concentrated in relatively short speciation phases caused by bursts of evolutionary changes, which are then followed by stages characterized by evolutionary stasis.
Since there are no choices to choose from, I'll just site all the structures of the leaf with its role then.
A Leaf has the following structures:
Cuticle
Upper epidermis layer
Palisade layer
Xylem
Phloem
Spongy mesophyll layer
Air space
Lower epidermis layer
Stomata
<span>Guard cells</span>
<span>Gallbladder is responsible for storing bile. A gallbladder is an organ located under the liver right above the abdomen. The bile is a liquid stored in the gallbladder that is released by the liver. Bile is a fluid that helps in digestive system by way of breaking fats into fatty acids. Bile is thus important as it has a digestive function for fatty foods inside the body.</span>
Respiratory- You breath faster to help supply the muscles with more oxygen.
Integumentary (skin) - Sweat helps cool down the body.
