Answer:
When they pick up trash that is on the sides of the street
Explanation:
Cardiorespiratory fitness refers to the ability of the circulatory and respiratory systems to supply oxygen to skeletal muscles during sustained physical activity.
Answer:
Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants. ... They also have the same function. However, wings evolved independently in the two groups of animals