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dedylja [7]
2 years ago
11

Which type of hearing problem can be reduced with ordinary hearing aids? central deafness conduction deafness sensory-neural dea

fness auditory pathway deafness?
Biology
1 answer:
sergiy2304 [10]2 years ago
5 0
<span>The answer is conduction deafness. Conduction deafness occurs when sound waves have difficulty reaching different parts of the ear. Hearing aids can amplify the sound waves or use the bone to conduct sound instead of air. The other choices are caused by damaged structures or differences in the brain. Ordinary hearing aids are ineffective in those cases.</span>
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The map shows regions of Africa, Europe, Asia, and Australia. It also shows a range of deforestation zones in these continents.
Mars2501 [29]

Answer:

Red zone stands for high deforestation.

6 0
2 years ago
BIG POINTS To whoever answers this 50 POINTS ok Describe how energy is produced from power of water. In your answer, include the
ioda

Hydropower can be harnessed from flowing and falling water. Water stored behind dams and at a height has a lot of potential energy which is converted into mechanical and electrical energy.This water is released gradually and is made to fall under the force of gravity and drive hydraulic turbines and electri­cal generators. Hydropower is also another indirect form of using solar energy. Hydropower has great potential as a supplier of electricity but environmental constraints limit such a development as the generation of electricity by hydro­electric power plants result in pollution and massive ecological disruptions such as land flooding, siltation, eutrophication and adverse effects on flora and fauna. Smaller dams and reservoirs cause less damage but cannot exploit the full potential of this energy resource. Planning environmental impact assessment and construction of a hydroelec­tric power plant takes many years and the high initial capital investments are also limiting factors in the development of hydropower. The development cost of hydroelectric power plants can be reduced by developing low cost turbines and generators, involving public participation in the development and opera­tion of the project and using efficient environmental friendly technologies.

4 0
3 years ago
What happens to sedimentary rocks as they become metamorphic rocks?
notsponge [240]

Answer:

Their minerals change

Explanation:

When they become metamorphic rock they are going through severe heat, causing the minerals to change.

7 0
2 years ago
Read 2 more answers
What is the water cycle and explain along with the process!​
Ann [662]

Answer:

The water cycle is a process in which water is lost from water bodies and then it again comes back to earth in form of rain. This is how I know it, but the explanation is correct.

Explanation:

See,

  • Water from water bodies evaporates and becomes water vapour due to heat
  • This then reaches high altitudes, where it condenses with dirt to create small droplets thingy
  • This then creates a cloud, which on correct saturation with water, makes it rains.

This cycle goes on continuously creating a cycle which is termed the water cycle.

Hope it helps

BYE

5 0
2 years ago
What could increase the likelihood of an algae bloom in a nearby lake? Give three sugestions and explain why.
love history [14]

I tought I could help you so here you gooo!!!The development and proliferation of algal blooms likely result from a combination of environmental factors including available nutrients, temperature, sunlight, ecosystem disturbance (stable/mixing conditions, turbidity), hydrology (river flow and water storage levels) and the water chemistry (pH, conductivity, salinity, carbon availability…).

However, the combination of factors that trigger and sustain an algal bloom is not well understood at present and it is not possible to attribute algal blooms to any specific factor.  READ MORE about the factors that cause algal blooms...

Nutrients

Nutrients promote and support the growth of algae and Cyanobacteria. The eutrophication (nutrient enrichment) of waterways is considered as a major factor. The main nutrients contributing to eutrophication are phosphorus and nitrogen.

In the landscape, runoff and soil erosion from fertilized agricultural areas and lawns, erosion from river banks, river beds, land clearing (deforestation), and sewage effluent are the major sources of phosphorus and nitrogen entering water ways. All of these are considered as external sources.

Internal origin of nutrients comes from the lake/reservoir sediments. Phosphate attaches to sediments. When dissolved oxygen concentration is low in the water (anoxic), sediments release phosphate into the water column. This phenomenon encourages the growth of algae.

Temperature

Early blue–green algal blooms usually develop during the spring when water temperature is higher and there is increased light. The growth is sustained during the warmer months of the year. Water temperatures above 25°C are optimal for the growth of Cyanobacteria. At these temperatures, blue–green algae have a competitive advantage over other types of algae whose optimal growth temperature is lower (12-15°C).

In temperate regions, blue–green algal blooms generally do not persist through the winter months due to low water temperatures. Higher water temperatures in tropical regions may cause blue–green algal blooms to persist throughout the year.

Light

Blue–green algae populations are diminished when they are exposed to long periods of high light intensity (photo-inhibition) but have optimal growth when intermittently exposed to high light intensities. These conditions are met under the water surface where light environment is fluctuating.

Even under low light conditions, or in turbid water, blue–green algae have higher growth rates than any other group of algae. This ability to adapt to variable light conditions gives cyanobacteria a competitive advantage over other algal species.

Stable Conditions

Most of blue–green algae prefer stable water conditions with low flows, long retention times, light winds and minimal turbulence; other prefer mixing conditions and turbid environments.

Drought, water extraction for irrigation, human and stock consumption and the regulation of rivers by weirs and dams all contribute to decreased flows of water in our river systems. Water moves more slowly or becomes ponded, which encourages the growth of algae.

In water bodies, another consequence of stable conditions is thermal stratification. Thermal stratification occurs when the top layer of the water column becomes warmer and the lower layer remains cooler. When the two layers stop mixing, the upper layer becomes more stable (no wind-induced mixing, convection cells)and summer blooms of buoyant blue-green algae are supported.

When a water body is stratified, bottom waters often become depleted with oxygen (anoxia) which may lead to increased nutrient release from the sediments. Pulses of nutrient from the colder bottom layer may fuel up the algal growth in the top layer.

Turbidity

Turbidity is caused by the presence of suspended particles and organic matter (flocs) in the water column. High turbidity occurs when a lot of water is running through the system (high discharge after a rain event). Low turbidity occurs when there is only a small amount of suspended matter present in the water column. Low turbidity can be due to slow moving or stagnant water that allows suspended articles to settle out of the water column. When turbidity is low, more light can penetrate through the water column. This creates optimal conditions for algal growth. In return, growing algae create a turbid environment.

hope this helped:) have a great day

5 0
3 years ago
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