Enrique organized a campaign called Bulk It Up at his school. The campaign urged students to buy bulk products rather than single-use items. The campaign was so successful that convenience stores near the school started carrying more products such as juice and peanuts in large packages rather than single-use packages. The response at convenience stores to Enrique's campaign demonstrates A. the value of single-use products.
B. hat consumers have power in the marketplace.
C. that young adults have little ability to change the amount of trash discarded. the amount of trash young people generate.

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.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.