tbggheemoney
17.04.2020 •
Chemistry
Which statement concerning ecosystems is correct?
A) Stable ecosystems that are changed by natural disaster will slowly recover and
may again become stable if left alone for a long period of time.
B) Competition does not influence the number of organisms that live in ecosystems.
C) Climatic change is the principal cause of habitat destruction in ecosystems in the
last fifty years.
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Ответ:
Molly’s idea is the best response. In this exam- ple the beach sand is formed from the wearing away of rock at the Earth’s surface. The weath- ered rock is carried away by wind and water (eroded) where it eventually ended up in the ocean. The small particles of rock were tossed about by the ocean, washing up on the beach as sediment.