What is sustainability? How does the concept of sustainability relate to green energy?
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Answer 1
Answer:
Sustainable energy is energy that is consumed at insignificant rates compared to its supply and with manageable collateral effects, especially environmental effects. Another common definition of sustainable energy is an energy system that serves the needs of the present without compromising the ability of future generations to meet their needs. The organizing principle for sustainability is sustainable development, which includes the four interconnected domains: ecology, economics, politics and culture. Sustainability science is the study of sustainable development and environmental science.
Answer 2
Answer:
Conceptually, one can define three generations of renewables technologies, reaching back more than 100 years .
First-generation technologies emerged from the industrial revolution at the end of the 19th century and include hydropower, biomass combustion and geothermal power and heat. Some of these technologies are still in widespread use.
Second-generation technologies include solar heating and cooling, wind power, modern forms of bioenergy and solar photovoltaics. These are now entering markets as a result of research, development and demonstration (RD&D) investments since the 1980s. The initial investment was prompted by energy security concerns linked to the oil crises (1973 and 1979) of the 1970s but the continuing appeal of these renewables is due, at least in part, to environmental benefits. Many of the technologies reflect significant advancements in materials.
Third-generation technologies are still under development and include advanced biomass gasification, biorefinery technologies, concentrating solar thermal power, hot dry rock geothermal energy and ocean energy. Advances in nanotechnology may also play a major role.
First-generation technologies emerged from the industrial revolution at the end of the 19th century and include hydropower, biomass combustion and geothermal power and heat. Some of these technologies are still in widespread use.
Second-generation technologies include solar heating and cooling, wind power, modern forms of bioenergy and solar photovoltaics. These are now entering markets as a result of research, development and demonstration (RD&D) investments since the 1980s. The initial investment was prompted by energy security concerns linked to the oil crises (1973 and 1979) of the 1970s but the continuing appeal of these renewables is due, at least in part, to environmental benefits. Many of the technologies reflect significant advancements in materials.
Third-generation technologies are still under development and include advanced biomass gasification, biorefinery technologies, concentrating solar thermal power, hot dry rock geothermal energy and ocean energy. Advances in nanotechnology may also play a major role.
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Manuel is performing a scientific investigation to determine whether fertilizer A or fertilizer B is more effective at increasing the growth rate of tomato plants. Manuel measures and separates 30 tomato plants into two equal groups that are planted in identical environments. He gives one group fertilizer A, and gives the other group the same amount of fertilizer B. During the first week of the investigation, he gives the tomato plants in both groups the same amount of water. During the second week, however, he forgets to water the tomato plants being given fertilizer B, but still provides water for the tomato plants being given fertilizer A. Two weeks after planting, Manuel measures the tomato plants and discovers that the tomato plants given fertilizer A have grown much more rapidly than the tomato plants being given fertilizer B. Manuel's resultsA. are not valid because one of the variables was not controlled during week 2. B. are valid because he controlled all of the variables in week 1. C. are valid because he designed his experiment correctly. D. are not valid because he should not have grown the plants in identical environments.
How does a dog meet all the characteristics of life
Sally and Maria hypothesized that earthworms lived only in dark, damp places. They measured a one-meter square in a shady spot near a stream. They dug through the soil and collected earthworms. They collected 43 worms. They repeated the experiment in several locations, sunny and dry included. They found the most worms in the shady, damp plot near the stream. Several other groups of science students carried out the same experiment and got similar results. This is an example of A) bias. B) repetition. C) replication. D) validity.
A farmer chooses to breed the cows that produce the most milk rather than the cows that produce less milk. This is an example of A. uniformitarianism and biogeography. B. artificial selection. C. natural selection. D. homologous and analogous structures
Manuel is performing a scientific investigation to determine whether fertilizer A or fertilizer B is more effective at increasing the growth rate of tomato plants. Manuel measures and separates 30 tomato plants into two equal groups that are planted in identical environments. He gives one group fertilizer A, and gives the other group the same amount of fertilizer B. During the first week of the investigation, he gives the tomato plants in both groups the same amount of water. During the second week, however, he forgets to water the tomato plants being given fertilizer B, but still provides water for the tomato plants being given fertilizer A. Two weeks after planting, Manuel measures the tomato plants and discovers that the tomato plants given fertilizer A have grown much more rapidly than the tomato plants being given fertilizer B. Manuel's resultsA. are not valid because one of the variables was not controlled during week 2. B. are valid because he controlled all of the variables in week 1. C. are valid because he designed his experiment correctly. D. are not valid because he should not have grown the plants in identical environments.
How does a dog meet all the characteristics of life
Sally and Maria hypothesized that earthworms lived only in dark, damp places. They measured a one-meter square in a shady spot near a stream. They dug through the soil and collected earthworms. They collected 43 worms. They repeated the experiment in several locations, sunny and dry included. They found the most worms in the shady, damp plot near the stream. Several other groups of science students carried out the same experiment and got similar results. This is an example of A) bias. B) repetition. C) replication. D) validity.
A farmer chooses to breed the cows that produce the most milk rather than the cows that produce less milk. This is an example of A. uniformitarianism and biogeography. B. artificial selection. C. natural selection. D. homologous and analogous structures
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Plant reproduction can be made successful through animal interventions: Here are some examples of how animal behavior help plant reproduction:
1) Many plants rely to animals to deliver their pollen to other plants. These animals are called pollinators and include bees, birds, bats and other insects.
2)Other animals help plants reproduce by eating their fruits and scattering or digesting seeds. This will germinate the seeds and allow them to grow into new plants.
1) Many plants rely to animals to deliver their pollen to other plants. These animals are called pollinators and include bees, birds, bats and other insects.
2)Other animals help plants reproduce by eating their fruits and scattering or digesting seeds. This will germinate the seeds and allow them to grow into new plants.
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1. Cleavage stage embryo
2. Cultures blastocyst
3. Isolated inner cell mass
4. Irradiated mouse fibroblast feeder cells
5. Cells dissociated and replaced
6. New feeder cells
7. Established embryonic stem cells cultures
2. Cultures blastocyst
3. Isolated inner cell mass
4. Irradiated mouse fibroblast feeder cells
5. Cells dissociated and replaced
6. New feeder cells
7. Established embryonic stem cells cultures
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The two definitions are not animate or lifeless or the other definition is spiritless or sluggish.
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1. gamete
2. Genes, DNA, Chromosomes, Nucleus
3. Chromosomes are found in many places in the cell
2. Genes, DNA, Chromosomes, Nucleus
3. Chromosomes are found in many places in the cell
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another name for divergent boundaries because seafloor spreading occurs here. ... long, narrow zone where one lithospheric plate descends beneath another.
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Populations (all members of one type of organism living in an ecosystem) in a community (several populations living in an ecosystem) depend on each other because different species in various population could be sharing a similar food chain and depending on each other for survival.
if one population dies out in a community then all the populations that depend on that species for food may also die out. Hence a change in one population affects the entire community because all the populations in a community depends on each other.
if one population dies out in a community then all the populations that depend on that species for food may also die out. Hence a change in one population affects the entire community because all the populations in a community depends on each other.
If you are talking about a community of like animals then they depend on each other because some animals could be in the same food chain to survive for food , if 1 species died out then most would be impacted by it and maybe die out too. Hope it makes sense and helps...!
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