Understanding Ecosystems: Impacts of Giant Salvinia

Question: 8. An environment can support only as many organisms as the available energy, minerals, and oxygen will allow. Which term is best described that this statement? A.biological feedback B.biological diversity C.homeostatic control D.carrying capacity 10a. This question has two parts. Giant salvinia is a floating fern native to Brazil introduced to Texas as an aquarium plant and is now found in large bodies of water across the state. The invasive plant may be carried to new bodies of water by fishing and recreational boats. It grows quickly, covering large areas of the water's surface. When the plant dies and decomposes, the oxygen content in the water declines. Part A Which statement BEST describes how giant salvinia affects a Texas ecosystem? A.It promotes the growth of new types of plants. B.It increases the stability of the ecosystem. C.It provides an energy source for the ecosystem. D.It inhibits the growth of native plant species. 10b. Part B Which evidence supports the answer to Part A? A.Giant salvinia is poisonous to other plants that grow on the water's surface. B.Giant salvinia produces waste products that are used by other plants. C.Giant salvinia releases carbon dioxide that other plants cannot use. D.Giant salvinia prevents light from reaching plants that grow underwater.