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Anastaziya [24]
2 years ago
12

Why do we need to wash our hands before eating and after using washrooms?

Biology
1 answer:
Dmitry_Shevchenko [17]2 years ago
8 0
Because bacteria could get on our hands through out eyes, ears, mouth, or nose (since all of which is noted to be connected to one another) and it could make you extremely sick. Although some bacteria is good for you, an extreme amount can make you extremely sick.
For example, you can contract ecoli and if that's not treated it can be fatal because you lose a ton of fluid and nutrients! Good luck, rockstar. I hope this is what you were looking for, and you pass! (:
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A scientist researching salamanders has obtained two different specimens. Under what conditions would he classify them as belong
mafiozo [28]
<span>This is the condition under which he would classify them as belonging to different species - the two salamanders cannot mate to produce a fertile offspring. If these two lizards belonged to the same species, they would normally be able to breed and give birth to a fertile new "child." However, given that they are not of the same species, they cannot do such a thing, which is why this scientist classified them that way.</span>
3 0
3 years ago
Read 2 more answers
what is the significance of diffusion and osmosis in living organism ?give one example in support of your answer​
olasank [31]

Answer:

Diffusion is the process in which molecules and ions move from a region of high concentration to low concentration. Its also how cells transport waste out of the cell and nutrients into it hence being very crucial. Diffusion also occurs without the expenditure of extra energy using a procedure known as passive transport. (Osmosis is a form of diffusion but deals with water exclusively).

Examples of where diffusion is important;

In the intestines - Digested food molecules such as amino acids and glucose move down the concentration gradient from the intestine into the bloodstream. Wastes such as carbon dioxide or urea travel via diffusion from the body's cells to the bloodstream.

Osmosis plays a major role in living organisms. It aids in the transportation of nutrients from cells to cells and also helps to remove the waste's metabolic products from the cell. The purification of blood in the kidneys is also dependent on the process of osmosis.

4 0
1 year ago
What does the number of electrons on the outer energy level of an atom tell you
adell [148]
Well, first off it tells you the number of valence electrons (because that’s what those are valence electrons) it also tells you how that atom is going to bond with other atoms (whether it will tend to loose or gain electrons when in chemical bonds). It also can show how reactive an element is (if it has eight or in some cases two then it won’t react because that outer shell is full)...basically it tells you the chemical properties of that atom
5 0
3 years ago
Oxygen is formed from carbon dioxide in _____(1)_____, while carbon dioxide is formed from oxygen in _____(2)_____.
g100num [7]

Answer:

Oxygen is formed from carbon dioxide in <u><em>photosynthesis</em></u>, while carbon dioxide is formed from oxygen in<u> </u><u><em>respiration. </em></u>

Explanation:

Photosynthesis can be described as the process by which plants make glucose and oxygen from carbon dioxide and water in the presence of sunlight. By this method, plants are bale to make their own food. Cellular respiration can be described as a process by which plants convert oxygen and glucose into water and carbon dioxide along with the release of ATP.  The process of photosynthesis and cellular respiration are opposite of one another and are equally essential.

7 0
3 years ago
Read 2 more answers
Rank the following ecosystems in order of their net primary productivity, from lowest to highest:________. a) open ocean. b) tro
katrin [286]

desert, open ocean, lake, tropical rain forest

Explanation:

The net primary productivity tells us about how productive an ecosystem is. It is usually derived by the difference between the amount of carbon dioxide that producers used to the amount they release during their cellular respiration.

  • The rainforest is the biome with the highest amount of net productivity.
  • The amount of sunlight and organic matter used up during photosynthesis is very large.
  • The tropical rain forest receives the highest amount of sunlight because the sun is overhead here.
  • This provides energy to drive photosynthetic process in the presence of other available resources.
  • Deserts are bare and lacks plants due to the extreme conditions here not favorable to life.
  • The open ocean productivity is restricted to the photic zone where light is only able to reach
  • Lakes are highly productive ecosystems.

learn more:

Producers brainly.com/question/9684714

#learnwithBrainly

4 0
3 years ago
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