True/False: 35. Many multicellular organisms can break down cellulose molecules.

36. _ Energy flows through an ecosystem in a one-way stream.

37 In the open ocean, food chains are usually shorter.

38. Algae is considered a heterotroph.

39. A scavenger is considered a tertiary consumer.

40. Energy is always recycled.

41. Matter is never recycled.

42. Biogeochemical cycles will sallydhalai indefinitely because matter is never created or destroyed.

43 The largest reservoir of nitrogen is in the hydrosphere.

44. Phosphorus is the limiting nutrient in seawater, whereas nitrogen is the limiting nutrient in freshwater

True

True

False

true

True

False

True

True

False

If one essential nutrient within an ecosystem runs out, primary productivity will be limited.

Explanation:

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.