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Elodia [21]
3 years ago
8

2. What are some sources of carbon in the carbon cycle?

Biology
1 answer:
9966 [12]3 years ago
8 0
There are both natural and human sources of carbondioxide<span> emissions. Natural sources include decomposition, ocean release and </span>respiration<span>. Human sources come from activities like cement production, </span>deforestation<span> as well as the burning of </span>fossil fuels<span> like </span>coal, oil<span> and </span>natural gas<span>.</span>
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Cell at metaphase of mitosis contains 20 sister chromatids, how many chromosomes will be present in a g1 cell? if a cell at meta
kumpel [21]

Answer:

The correct answer would be 10.

The cell cycle can be divided into four phases namely gap 1 (G₁) phase , synthesis (S) phase, gap 2 (G₂) phase, and  mitosis (M) phase.

DNA (deoxyribonuceic acid) content is only replicated and doubled in the S phase. However, the chromosome number remains the same. It can be explained as the number of chromosomes remains the same (2n) but number of chromatids doubles (4n) after S phase.

The number of chromatids restores to 2n in daughter cells after completion of mitosis.

Hence, if number of chromatids in metaphase was 20 i.e. 4n then the number of chromosomes (2n) would be 10.

Hence, 10 chromosomes or 5 pairs of chromosome would be present in the cell during its G₁ phase.

4 0
3 years ago
These question all about ice storms!!!!!!!! answer them in complete sentence
arsen [322]
I can't answer 1 but 2=First, make sure you weather proof the house, than go from there and try anything you think is necessary in this situation.

7 0
3 years ago
Read 2 more answers
Do all carbon atoms take the same amount of time to complete a trip in a carbon cycle?
laila [671]
Not really some take faster time
7 0
3 years ago
Which signs would the nurse observe in a patient with alzheimer disease? select all that apply?
VikaD [51]
<span>Since you are missing the options, I'm going to enumerate some possible answers:
- </span><span>memory loss
</span><span>- Wandering
</span><span>- Unpredictable behavior
</span><span>- inability to process visual sensory information
</span><span>- less concentration and attention
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6 0
3 years ago
Molluscs with a ventrally flattened foot that move via muscle contractions along this structure are called
pishuonlain [190]

Gastropods are centrally flattened molluscs that move via muscle contractions.

<h3>What are gastropods?</h3>

Gastropods are invertebrates animal that belong to the phylum molluscs. Examples of gastropods are snails and slugs. The lol be in either salt water or freshwater or land. Their body parts include head,mantle, body mass and shell. They have muscular foot which help in movement through muscular contractions.

Therefore, Gastropods are centrally flattened molluscs that move via muscle contractions.

Learn more about gastropods here.

brainly.com/question/18943590

6 0
2 years ago
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