Energy in communities-What percentage of energy is used and left over and why is this important for our environment?

1 answer:

7 0

Answer:All energy sources have some impact on our environment. Fossil fuels—coal, oil, and natural gas—do substantially more harm than renewable energy sources by most measures, including air and water pollution, damage to public health, wildlife and habitat loss, water use, land use, and global warming emissions.

Explanation:It becomes clear that for more than 45 percent of respondents, solar energy was the most environmentally friendly energy source. The energy generated by the wind was also a considered to be pro-environment by almost 24 percent of the respondents.

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A crop is treated with a pesticide and 98% of the insects are killed. what will most likely happen to the remaining insects?

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The 2% of the insects will begin to reproduce and grow their population exponentially and in time enable the population to recover. This is if the population is large enough to enable random mating. The 98% reduction in population drastically reduces competition for the remaining individuals hence giving them abundant resources for them to thrive.

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A certain species of salamander was split into two populations by a wide, dry valley, and the populations began to diverge from

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Answer:

This outcome in a hybrid zone is known as fusion.

Explanation:

In the field of biology, hybrid zone can be described as the area where closely-related species can interbreed and produce hybrid organisms. Reinforcement can be described as the phenomenon by which a hybrid zone develops between full species barriers. Hybrid speciation can be described as the phenomenon by which a new species forms as the direct result of mating between members of two existing species.

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Why the energy of the product might be lower than the energy of the reactants

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A reaction in which heat energy is absorbed is said to be endothermic. You can show this on simple energy diagrams. For an exothermic change: Notice that in an exothermic change, the products have a lower energy than the reactants.

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According to some scientists, what resulted from the environmental conditions existing on primitive earth illustrated above?

LekaFEV [45]

Some scientists have presumed that nature of life may exist with the choice dictated by the local environment. The primitive earth illustrated the evolution of the first heterotrophs from aggregates of organic molecules from the development of heterotrophic forms according to the existing environmental conditions.

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If you could measure the resting metabolic rate of the following animals, which would most likely have the lowest mass-specific

yawa3891 [41]

The horse and mouse are endotherms among them rat will have high mass-specific metabolic rate.

The shark and fish are endotherms among them fish will have high mass-specific metabolic rate.

Explanation:

The endotherm (heat requires in them to maintain internal temperature of the body) organism have high metabolic rates to maintain homeostasis, this requires the large amount of energy. Smaller animals have the greater surface area to volume ratio, hence more heat loss and higher metabolism. In larger animals body volume increases, surface area increase is also very slow, hence less heat loss and lower Metabolic rate. Smaller animals exchange oxygen to tissues at a high rate.

Same goes with ectotherms the larger the animal the smaller is the metabolic rate. During winters their activity slows down as they cannot adjust with the temperature of the surrounding.

However metabolic rates of ectotherm and endotherm cannot be compared.

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