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goldfiish [28.3K]
3 years ago
9

Human made gases that contain a combination of chlorine, fluorine, and carbon. The combination of these gases put a hole in Eart

h's ozone layer.
A. Chlorofluorocarbons
B. Ozone
C. Global Warming
D. Greenhouse gases
Biology
2 answers:
dalvyx [7]3 years ago
8 0
The answer is.. C

HOPE THis helps!!
Brums [2.3K]3 years ago
8 0

Answer:

the answer is A Chlorofluorocarbons.

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Read the procedure. What is the purpose of the bicarbonate that is dissolved in the water?
xxTIMURxx [149]

Answer:

Through this experiment we study the process of photosynthesis.

• In the begining the leaf disks's tissue has oxygen, this allows them to float.

• Then, in the experiment we infiltrate the leaf disks with a solution that has bicarbonate, and as a result their density changes (it increases) and so the leaf disks sink.

• Once the disks are on the bottom and we direct the light to them the process of photosynthesis starts, being the bicarbonate the source of carbon for the process.

• As we know a product of the photosynthesis proces is oxygen, so when it is released into the leaf disks the overall density changes again and the disks rise.

So as we can see, in this experiment the purpose of the bicarbonate is being the source of carbon for the process of photosynthesis that occurs in the leaf disks.

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1 year ago
Mitosis is a type of cell division. organize the images below to show the steps of mitosis.
barxatty [35]

Answer:    

The correct order is F, E, C, G, H, A, D, and B (look at the image in the attached files)

Explanation:

  • <u>Interphase</u><u>:</u> Stages G1, S, and G2. At this point probably, the chromatin duplication has already occurred, but it is still lax or dispersed. It has not condensed yet. Two pairs of centrioles are outside the nucleus (FIGURE F)  
  • <u>Prophase</u>: Centrioles move forward to the opposite poles of the cell. Chromatin is condensed and individual chromosomes are now visible. The nuclear membrane breaks into many pieces. Spindle apparatus -microtubules- forms. (FIGURE E)
  • <u>Metaphase:</u> The polar and the kinetochore fibers drive each individual chromosome to the equatorial plane. This stage ends when all the chromosomes are completely arranged in the medial area.  (FIGURE C)
  • <u>Anaphase</u>: Sister chromatids separate and move to the opposite poles of the cells, driven by the microtubules. In each pole, there are a pair of centrioles (FIGURE G and H).
  • <u>Telophase</u>: The nuclear membrane rearranges. Each sister chromatid becomes now a new chromosome. There is a pair of centrioles outside each of the nuclei. (FIGURE A)
  • Cytokinesis occurs at the end of the cell division. The rest of the cell is divided into two new daughter cells. Each daughter cell is an identical copy of the other cell, with the exact same genetic material (FIGURE D).
  • Decondensation of the genetic material of each new cell (FIGURE B).

5 0
3 years ago
Viruses mutate and can become more pathogenic to humans. Some viruses may originate in other animals, such as birds, bats or pig
Norma-Jean [14]

Answer:

Viruses may be defined as the organisms that shows the border line between the living and non living organisms. Viruses can only replicate when they enter in the body of a particular host.

Viruses are pathogenic for humans and can cause deadly diseases like AIDS. The pandemic condition of virus mainly depends on the the matter of time. The appearance of the disease condition before the occurrence of the another  disease.

7 0
3 years ago
Plz HELP ASAP why cant you here sound on the moon
Tamiku [17]
You can't hear sound on the moon because of space. Space is a vacuum so you can't hear anything unless there is a medium for it to travel through (like air)
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3 years ago
Do living thing need to have DNA to live.
White raven [17]
All living things have DNA within their cells
So Yes
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