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Stolb23 [73]
3 years ago
7

Seasons are caused by ?

Biology
2 answers:
sashaice [31]3 years ago
4 0

Answer:

The seasons are caused as the Earth, tilted on its axis, travels in a loop around the Sun each year. Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun.

Explanation:

NikAS [45]3 years ago
3 0

Answer:

Explanation:The seasons are caused as the Earth, tilted on its axis, travels in a loop around the Sun each year. Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun.

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What part of a fish helps it rise?Help ASAP​
8_murik_8 [283]
They use a internal pouch which is named swim bladder.




Explanation; Oxygen will enter a fish’s mouth, and passes through their gills. The oxygen will be taken and gets carried by hemoglobin through their bloodstream. Hemoglobin will take out some of the oxygen into their swim bladder. The amount of oxygen will show if they will sink or rise. Your question is how do they rise. If he goes up too much, the meaning of this is when the gas diffuses into their blood and out the gills.




Got this from a writing, but rephrased it.
3 0
4 years ago
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Which organism lives in a salt water ecosystem
Contact [7]

Answer:

B. Whale!

Explanation:

Snail, crawfish, and lily's all live in freshwater.

While D makes no sense water doesn't live anywhere.

Thanks for letting me help!!

6 0
3 years ago
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1)In your own words explain what air pollution is
Anna11 [10]

Explanation:

Question 1

Air pollution is the introduction of harmful gases and substances into the atmosphere that renders it unfit for use for life. Some of these toxic gases and particulates are:

  • Carbon monoxide
  • Carbon dioxide
  • Nitrogen oxides
  • Smoke
  • Dust particles
  • Soot

Question 2

Natural forms are the original nature or outlook of a substance. Examples of natural forms are:

  • Flowers
  • Leaves
  • Animals
  • Rocks
  • Shells
  • Corals

Question 3

Anthropogenic cause of pollution are human causes of pollution. Some of these are:

  • Combustion of fossil fuels in internal combustion engines release harmful and toxic gases into the atmosphere and causes hair pollution.
  • Improper disposal of waste can produce effluent that reaches the ground water system and other fresh water sources.
  • Noise pollution from airports is very harmful to ear.
  • Mining activities degrades soil and removes rich fertile soils that should be used for agriculture.
  • Mining wastes can lead to contamination of water bodies around.

Question 4

Fossil fuels are fuel types that forms from natural process in which organisms are decomposed anaerobically to preserve their energy components. Some of these fuels are:

  • Coal
  • Crude oil
  • Natural gas

Question 5

  • Heart diseases ; ischaemic heart diseases can lead to failure of the heart when it does not receive enough oxygen from the environment. Air pollution contaminates available oxygen in the atmosphere and this is very dangerous to life.
  • Lung cancer: poor air quality can lead to the development of cancerous tumor in the lungs.
  • Asthma: air pollution is one of the leading cause of asthma.

Other notable mentions are bronchitis, pulmonary diseases, stroke

Question 6

_7 million____ people die each year from air pollution according to the world health organization

Question 7

Air Quality Index(AQI) is an indicator used to express the quality of air in particular area. The AQI can tell the present air quality condition. It can also be used to forecast future air quality in years to come.

It shows how clean and polluted the air is.

Question 8

The air quality index uses different colors to alert people about the quality of air. Each color represents different health implication of air quality:

     Attached image shows the different colors used to alert people of about the air quality.

Question 9

  • About 7 million people die annually as a result of air pollution
  • Beijing cough is new disease that emanates from the rising air pollution in Beijing
  • Asia has the fastest rising cases of air pollution problems.
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Learn more:

Air pollution brainly.com/question/10743354

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3 0
4 years ago
Order the steps to take when drawing electron dot diagrams.
Lemur [1.5K]

Answer:

Order the steps to take when drawing electron dot diagrams.

Count the dots to make sure that all of the valence electrons are represented.  

✔ 4

Draw dots around the chemical symbol to represent the valence electrons of the atom.  

✔ 3

Use the periodic table to find the chemical symbol of the atom and the number of electrons in the valence shell.  

✔ 1

Write the chemical symbol of the atom.  

✔ 2

Explanation:

I did it on Egde I guess on the answers BTW just to help you guys

7 0
3 years ago
The cells of a pea are all derived from a single cell formed by the fusion of two?
Arisa [49]

Answer:

The mitochondria

Explanation:

8 0
3 years ago
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