Netprimary productivity is the primary productivity of an ecosystem, aftersubtracting energy lost in:a.dead plant tissues.b.inedible plant tissues.c.respiration by primary producers.d.respiration by primary consumers.e.inefficiencies of photosynthesis.

A. Most varieties of Sedum are not native plants in Albany or New York City. Why may it be dangerous to introduce a new species to an established ecosystem?B. How does a green roof reduces the amount of carbon dioxide in the atmosphere?C.  Why is it important to reduce the amount of carbon dioxide in the atmosphere?D. State one disadvantage of a green roof. E. What are other ways the owners or architects of a building can reduce its carbon footprint?

1.) Describe a food chain that has at least four different trophic levels. Label the tropic level (Producer, Primary consumer, Secondary Consumer, or Tertiary Consumer), whether the organism is a(n) autotroph or heterotroph, and provide an example of an organism at each tropic level.   2.)Name two biological processes involved in rapid carbon exchange:   3.)Name two geologic processes involved in long-term carbon exchange:

Approximately how much of the energy taken in by a consumer is used to make more biomass? Group of answer choices a. 80% b. 100% c. 60% d. 0% e. 10%

Distinguish between shifting cultivation and slash-and-burn agriculture. Explain with ecological principles and concepts and pros and cons of these methods.

AP Environmental Science Primary Productivity Problems   Net Primary Productivity efficiency can be calculated for terrestrial producers when values for insolation energy, respiration loss and gross productivity are known. Use the equations below to answer the following problems:   Net Primary Productivity = Gross Productivity – Respiration Loss   Efficiency = .          NPP           . X 100                      Insolation Energy   In a rice paddy in Southeast Asia, the insolation energy is 6,000,000 calories/m2/day. The gross productivity of the rice is 0.012 grams/cm2/day, and the respiration loss is 20 percent. One gram of rice is equivalent to 1000 calories.   Calculate the net primary productivity of the rice.               Find the efficiency of photosynthesis by the rice.   Could you mostly help me set it up and find it? So I can learn how to do it.

In the processes of photosynthesis and cellular respiration, carbon is cycled between all major spheres on Earth. Plants obtain carbon dioxide from the atmosphere as one reactant to conduct photosynthesis. Carbon dioxide is produced by organisms as a result of carrying out cellular respiration. Activity 1 Which claim is correct about the cycling of matter and the flow of energy in the carbon cycle? A. In the ecosystem, matter flows and energy cycles. B. In an ecosystem, both matter and energy cycle. C. In an ecosystem, matter cycles and energy flows. D. In an ecosystem, both matter and energy flow.

Answer clearly

If there were already enough nutrients present, what would be the TWO most important characteristics of a terrestrial ecosystem that would result in HIGH NPP? (your answers will give a possible range of values - I want to know which end of the range generates high NPP.  If it was nutrients (which it is not), you might to say high levels of nutrients (as opposed to low levels).)

Explain why energy flow in the ecosystem is unidirectional; while nutrients movements in the ecosystem is cyclical.