The cahuilla tribe was a native american community that lived in the arid area near present-day san diego. the cahuilla's diet relied heavily upon mesquite beans. in order to preserve the plants, only a portion of the beans that were available to harvest was harvested. why were some of the harvestable beans left on the plant?
a. lack of room in the harvest basket.
b. to grow into new plants.
c. for later harvest.
d. for wildlife to eat.

they each offer a fresh glut of resources to the organisms that can arrive and exploit them. as individuals and new species continue to appear, they actively and passively alter the environment. competition for shared resources increases, local abiotic and biotic conditions shift, and the relative abundances of species change accordingly. the process is called ecological succession, and it is one of the earliest and most well-known concepts in ecology.

b - the respond is innate and varies over time.

good luck!