1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Stels [109]
3 years ago
12

which star is the closest to the earth? how long does it take for light to travel from this star to earth

Biology
1 answer:
Paraphin [41]3 years ago
4 0

Answer:

Proxima Centauri is 4.243 light years away

Explanation:

You might be interested in
Why is the metric system important?
Alex73 [517]
It's important because it helps you measure things. The prefixes are telling you the distance or meters, etc.
8 0
3 years ago
Read 2 more answers
Red-green colorblindness is an X-linked recessive trait. If a woman who is heterozygous for the colorblind allele has children w
mash [69]

The answer is in the image attached.

Hope this helps!

7 0
3 years ago
Help Please...Needed Quickly
Alex787 [66]

answer 1:

Environmental Pollution occurs in different forms; air, water, soil, radioactive, noise, heat/ thermal, and light

Air Pollution

Water Pollution

Soil pollution

Noise pollution

Radioactive pollution

Light pollution

Humans are the main cause of water pollution, which is triggered in many ways: by the dumping of industrial waste; due to temperature rise, that cause the alteration of water by reducing the oxygen in its composition; Or due to deforestation, which causes sediments and bacteria to appear under the soil

Most of this air pollution we cause results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power our vehicles. Carbon dioxide (CO2) is a good indicator of how much fossil fuel is burned and how much of other pollutants are emitted as a result.

Effects:

Nutrient pollution can cause toxic algal blooms in drinking water sources that create toxins that kill fish and other aquatic animals. Direct exposure to this toxic alga causes serious health problems in humans including neurological effects, respiratory problems, stomach and liver illness, and rashes.

answer 2:

The Industrial Revolution brought rapid urbanization or the movement of people to cities. Changes in farming, soaring population growth, and an ever-increasing demand for workers led masses of people to migrate from farms to cities. Almost overnight, small towns around coal or iron mines mushroomed into cities.

anwer 3:

advantages are

1_A Fuel Supply That Never Runs Out

2_Zero Carbon Emissions

3_Cleaner Air and Water

4_A Cheaper Form of Electricity

5_Renewable Energy Creates New Jobs

disadvantages are

1_Higher Capital Costs

2_Electricity Production Can Be Unreliable

3_Energy Storage Is a Challenge

4_It’s Impacted by Environmental Conditions

5_Renewables Still Have a Carbon Footprint

anwer 4:

Hazardous waste can be treated by chemical, thermal, biological, and physical methods. Chemical methods include ion exchange, precipitation, oxidation and reduction, and neutralization. Among thermal methods is high-temperature incineration, which not only can detoxify certain organic wastes but also can destroy them.

answer 5:

You could do this by:

1_Try to stay away from disposable goods. In particular, paper plates, cups, bottles, and plastic utensils.

2_Buy durable and reusable goods. ...

3_Pack your lunch in a reusable box rather than foil or cling film.

4_Buying products with less packaging. ...

5_Buying products in bulk.

I WISH THIS WILL BE HELPFUL, GOOD LUCK :)

3 0
2 years ago
Read 2 more answers
A client who had injection sclerotherapy for varicose veins is advised to wear compression (support) stockings. what is most imp
Xelga [282]

Don the stockings before getting out of bed in the morning.


To prevent distention of the veins, stockings should be applied before the legs are placed in a dependent position. Stockings should be used preventively before the discomfort associated with venous pressure and edema occurs. Knee-high stockings should end 2 inches (5.1 cm) below the knee to avoid popliteal pressure, which limits venous return. Stockings apply uniform pressure. Elastic bandages may slip or develop wrinkles, creating uneven pressure and constriction; edema may result.

4 0
3 years ago
.........................
Yuki888 [10]
It’s cell wall and chloroplast. We don’t need chloroplast because we don’t make our own food.
8 0
3 years ago
Other questions:
  • Where can most of the fresh water on the earth be found
    8·2 answers
  • Which statements about omnivores are true?
    14·2 answers
  • Which of these is required for natural selection to occur?
    14·1 answer
  • What is the lowest level of organization in a starfish
    7·1 answer
  • The niche of a species is the functional role of that species in the community that it belongs to. Species that have narrow nich
    15·1 answer
  • The image shows a group of fish.
    11·2 answers
  • What is the percent of your DNA is the same as the following organisms.
    8·1 answer
  • Plant and Animal Cells<br> What is the name of this organelle?
    7·1 answer
  • Calculate the diploid &amp; haploid numbers for each of the following organisms
    6·1 answer
  • The process in which a solid changes directly to a gas is called
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!