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Concept explainers
Nearly all life gets its energy from _______ which is captured by the process of_______. In contras ____________________are constantly recycled during processes called ________.
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To review:
The given blank space in the statement, “nearly all life gets its energy from_________, which is captured by the process of______. In contrast, ________ are constantly recycled during processes called________.”
Introduction:
The entire life on the Earth is driven by energy and nutrients, which moves in a linear and circular form, respectively. The distance of the Earth from the sun and the presence of essential nutrients made life possible on Earth.
Explanation of Solution
The ultimate source of all energy on the Earth is the sun. The green plants are capable enough to capture sunlight directly during photosynthesis. The food produced during this process is stored in the plants and later utilized by the consumers. Thus, the consumers utilize solar energy indirectly.
The food consists of various nutrients like carbon, nitrogen, phosphorous, and sulfur, which are captured by the plants from the soil and locked in complex organic forms. These organic molecules are utilized by the consumers’ body and returned back to the soil after their death and decay.
Thus, these nutrients are once again available to the plants. Apart from the soil and living organism, these nutrients often escape to other spheres like atmosphere and ocean. Through different processes, they are returned back to the soil. For example, carbon and nitrogen also have a short residence time in the atmosphere and are returned back through photosynthesis and nitrogen-fixing bacteria to the soil. Thus, these form the nutrient cycles or biogeochemical cycles.
Nearly all life gets its energy from sunlight, which is captured by the process of photosynthesis. In contrast, nutrients are constantly recycled during processes called nutrient cycles.
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Chapter 28 Solutions
EBK BIOLOGY
- All the following are renewable energy sources except ______. a. hydropower b. wind c. natural gas d. solar energyarrow_forwardAn organism exists for long periods by using only CO2 and H2O. herbivore. carnivore. decomposer. autotroph. heterotroph.arrow_forwardNonrenewable Energy sources - impact on the environment What is the environment impact of coal? Include coal mining, transport, and use What is the environment impact of crude oil? Include drilling, transport, and usearrow_forward
- A community is surrounded by forests. There is heavy rainfall, and most of the year it is very cloudy.It is located near two fast-flowing rivers. The people want to build a power plant that will not pollute.They are choosing between solar, biomass, or hydroelectric power. Write one to two sentences about each of these energy sources. Describe whether each energy source would meet their goals, and whether it is a good energy source for their area.arrow_forwardWhich statement about energy is false?Group of answer choices It includes work, plus anything that can be transformed into work. In chemical form, it is passed up the food chain, along with nutrients. It moves between the living and nonliving world. Because energy is neither created nor destroyed, ecosystems can run indefinitely without any input energy. Some ecosystems can function independent of the energy of sunlight.arrow_forwardDecomposers cannot obtain their energy directly by photosynthesis. True Falsearrow_forward
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- Photosynthetic organisms are called either_______or_______ . The energy that these store and makeavailable to other organisms is called________ .arrow_forwardThe products of cellular respiration (________ and ________) are the reactants of photosynthesis. glucose, water carbon dioxide, water carbon dioxide, glucose oxygen, carbon dioxidegarrow_forwardWhich causes a dense growth of plant life and death of animal life from lack of oxygenarrow_forward
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