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STALIN [3.7K]
2 years ago
13

Why do we feel pain in our hearts when we are sad

Biology
1 answer:
Orlov [11]2 years ago
5 0

When people say words hurt is bc your feelings com from your brain and when you feel hurt or sad your brain makes the feeling physical. Like if you are depressed then your brain makes you sleep a lot so that you don't have to feel that pain during the day. Also, people can die from a broken hart bc it isn't your physical hart that is feeling everything it is actually your brain so it makes it self sabotage.    

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Why is vinegar used in food preservation?
weqwewe [10]
Vinegar is an extremely acidic liquid. Very few microorganisms (ie bacteria and fungus which cause foods to spoil) can survive in such an acidic environment. Among other effects, it can destroy their cell walls, and prevent their own enzymes working (enzymes are extremely pH sensitive). There are a small number of microorgamisms which are adapted to survive in extreme acidity. However, this adaptation prevents them from surviving in more 'normal' environments. Therefore, anything which can survive in the vinegar, will not likely survive on your kitchen surface, and the same is true the other way around. Therefore, as vitually nothing can colonise whatever is in the vinegar, the food will be very effectively preserved. . . . . . . . . . . you can say........................ . . the low pH a nd high acidity of vinegar destroy bacteria
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Please select all that apply!
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C The rods will attract each other because they are both positively charged.
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2 years ago
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Which of the following is an example of point-source pollution?
kodGreya [7K]

Answer: D. Acid from abandoned mines

Explanation:

Point source pollution can be define as the pollution that can be caused by a pollutant whose source of origin is known. As the source of origin is known the path of the pollutant can be traced back to it's origin hence, the pollution can be controlled.

Among the options given, D. Acid from abandoned mines. is the correct option this is because of the fact that the source of origin of the pollutant is known that is abandoned mines.

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A brown fruit fly was crossed with a black fruit fly as shown below. What is the probability of a resulting offspring being blac
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Assignment Summary For this assignment, you will model the structures of the cell and describe their functions. You will do this
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The model of the structures of the cell and and their functions is given in the image attached.

<h3>What are the cell structure and their functions?</h3>

Some explanation on structure of cells is given below:

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This is known to be the  key or major organelle that tends to sustain or hold the genetic information that is needed  for reproduction and cell growth as well as development.

Note that  all cell is known to be made up of one nucleus and also a kind of membrane-bound organelles that can be seen in the cytoplasm.

Mitochondria:

This is known to be a double membrane-bound organelle that is known to function by acting as the site for the energy transactions and it is made for the survival of all cell.

Therefore, The model of the structures of the cell and and their functions is given in the image attached.

Learn more about Cell structure from

brainly.com/question/13880600

#SPJ1

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2 years ago
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