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3 years ago

Which range of sound waves can be reflected and used for finding distances, scanning documents, and cleaning engine parts

Biology

1 answer:

lisov135 [29]3 years ago

6 0

Answer:Infrasonic.

Explanation:Because it describes the atomspheric waves with different frequncies.

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As Virginia becomes more more populated construction of new homes has destroyed much of a force this has cause rivers and stream

AleksandrR [38]

Answer:

The correct answer is - water pollution.

Explanation:

In the US, water pollution is one of the most serious ecological problems, and sedimentation by filled with dirt, slit caused by development sites or construction sites. It is caused in the name of developing cities and states for new homes and other construction that is nothing but careless development that is causing water pollution in these areas including the Virginia.

The excessive silt has covered the spawning beds of fish causes spawning of the habitat. The dirt and slit and sediments cause inhibiting light to aquatic plants that result in less oxygen and food for aqautic life.

4 0

4 years ago

Which u.s. city has the highest average numbers of sunny days per year

Yuliya22 [10]

Answer: researchers confirm it that there are two major cities in United States with the most sun year round, and they are Phoenix and Las Vegas. Both cities are sunny for 85 percent of the time between sunrise and sunset, calculating to over 3800 hours a year

Explanation: Average annual sunshine in the sunniest major US cities.

City % Sunshine Hours of Sun Clear Days

Phoenix, Arizona 85 3872 211

Las Vegas, Nevada 85 3825 210

Sacramento, California 78 3608 188

Los Angeles, California 73 – 147

Miami, Florida 70 3154 74

Denver, Colorado 69 3107 115

Oklahoma City, Oklahoma 68 3089 139

San Diego, California 68 3055 146

Salt Lake City, Utah 66 3029 125

San Francisco, California 66 – 160

Tampa, Florida 66 2927 101

3 0

3 years ago

Read 2 more answers

Identify the structure of the human heart which is valve between the left atrium and left ventricle of the heart, consisting of

aliya0001 [1]

MMMMIIIIITTTTRAAAALLLL VALVE

8 0

3 years ago

Research suggests that mitochondria and chloroplasts are modern-day descendants of ancient prokaryotes that were engulfed by anc

Gennadij [26K]

Answer:

Explanation:

Mitochondria and Chloroplast contain some Ribosomes which are different from the cytoplasmic ribosomes,These were measured to be 80s,while the Mitochondria and Chloroplasts are 70s.

Furthermore smaller circular DNA were found in theses two organelles,(which are the first DNA outside nucleus).These DNA types are the exact forms found in bacteria.

Thus, it was concluded that if these organelles could contained these genetic materials,they must be bacterial.Therefore chloroplast and mitochondria were ancient bacterial which now live in a mutual exclusive relationships in the larger cells of Eukaryotas(plant and animals).This is the basis of Endosymbiont theory.

That is these organelles live inside(Endo) new host in symbiosis or beneficial association with one another (symbiont).

6 0

4 years ago

Without genetic , natural selection cannot occur

Sati [7]

Non Genetic Changes CANNOT be passed to the next Generation and are NOT examples of evolution.

6 0

4 years ago

Read 2 more answers