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bogdanovich [222]
3 years ago
12

How do scientists know about the structure of the earth?

Biology
1 answer:
Andrew [12]3 years ago
8 0

Answer:

I think it's " P waves from earthquakes can travel through both solids and liquids so they tell us what is inside the earth.  "

Explanation:

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Freshwater biomes have _______.
AnnZ [28]

The right option is; c. a salinity of less than 1%

Freshwater biomes have a salinity of less than 1%

The freshwater biome is a large community of plant and animals that live in water bodies with a salinity of less than 1%. Fresh water biomes include streams, rivers, ponds, lakes, and some wetlands. The fresh water biomes cover about 20% of the earth and they contain several species of fish and animals such as frogs, crocodiles and turtles.


8 0
3 years ago
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Which is the best description of activation energy?
Lina20 [59]

Answer:

A

Explanation:

Activation energy is the amount of energy required to reach the transition state, so A would seem like the best fit, because the heat is being ADDED to reach the state. (in this situation, starting the reaction)

5 0
3 years ago
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How did Lamarck propose that species evolve
Sindrei [870]
<span>Lamarck proposed that by selective use or disuse of organs, organisms acquired or lost certain traits during their lifetime. Then passed onto offspring-leading to change in species.</span>
5 0
3 years ago
A community needs more electrical energy. The community is located in an
Arlecino [84]

Answer:

The community should invest in the production of biomass energy as an alternative source of energy, given the large surplus of waste corn.

Explanation:

When a community has a considerable amount of organic waste, the combustion of such wastes can be used for energy production, which is considered to be obtaining energy by biomass.

For a community with this characteristics, biomass becomes the best option for alternative energy, whereas waste is being used -which is an adequate disposal of solid waste- in addition to the fact that the production of pollutants is lower, compared to the use of fossil fuels.

Other sources of alternative energy are not possible because:

  • The climatic conditions -frequent rains- do not allow to take advantage of solar energy.
  • The low wind speed is not useful for wind power.
  • The low flow of the rivers makes the installation of hydroelectric plants impossible.

For this community it is a fact that the best alternative energy option is to use waste corn as fuel.

Learn more:

brainly.com/question/2705478

6 0
3 years ago
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What force caused some of these little dots to form big dots
Ratling [72]
Could you show the question? or are there options? like a, b, c, or d
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