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Digiron [165]
3 years ago
5

Which of the following may cause asthma?

Biology
2 answers:
nadya68 [22]3 years ago
7 0

Answer: Tobacco/Smoke

Explanation:

When it goes into your lungs, it affects you causing a way to have difficulty breathing.

spin [16.1K]3 years ago
3 0
Answer: Tobacco smoke

Explanation: actually any kind of smoke can trigger you asthma to act up. You can also outgrow it! I used to have it when I was little but I outgrew it a few yrs back.
When the smoke is inhaled into the lungs, your breathing rate starts acting up. Making it harder for the person to breath.
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3<br>Give scientific reasons<br>1) We should not take junk food or packed food as a regular meal​
Effectus [21]

Answer:

Eating junk food on a regular basis can lead to an increased risk of obesity and chronic diseases like cardiovascular disease, type 2 diabetes, non-alcoholic fatty liver disease and some cancers. We know Australian's eat too much junk food. 35% of adults' daily energy intake (kilojoules) comes from junk food.

6 0
3 years ago
this involves small scale changes within a community that occur repeatedly over the life of that community
Akimi4 [234]

Explanation:

<u>Succession  </u>involves small scale changes within a community that occur repeatedly over the life of that community.

Ecological communities are highly dynamic- they gradually evolve. Typically their progression involves:

  • colonizing species exploiting uninhabited areas (Primary succession)
  • becoming a habitable and increasingly complex community
  • there is increased diversity of organisms (Secondary)

Further Explanation:

The makeup of biological communities is crucial to defining Primary and Secondary succession; eventually, through changes in this makeup, a steady-state or equilibrium is reached called a climax community. While Primary succession starts off with the modification of a previously unoccupied area along with increasing variation; secondary succession begins after major disruption in the community such as fires, storms and flooding.

However, the process of becoming a climax community can be pretty complicated- it is very dependent on other factors like temperature and rainfall. Communities that experience rapid change, frequent major disruptions and even human intervention, are less likely to attain a stable equilibrium and may never become climax communities.  

Learn more about ecological succession at brainly.com/question/2456852

#LearnWithBrainly

5 0
3 years ago
Explain the genotypes and phenotypes of skin color. summarize the relationship between the number of active genes and color of t
Kruka [31]
<span>Human skin color is a polygenic trait, which means that multiple gene loci (with different alleles) are involved in its expression. It has been shown that there more than 350 genetic loci involved in determining skin color. Because of that, there is the enormous number of possible genotypes for the skin color and as a result, the phenotypes vary from the darkest brown to the lightest hues.</span> <span> Different populations have different allele frequencies of genes for human skin color, and the combination of these allele variations brings about complex and continuous variation in skin coloration. Natural skin color can change due to exposure to sunlight (becomes darker) and that is the way it adapts to intense sunlight irradiation (protection against the UV exposure).</span>
8 0
3 years ago
Read 2 more answers
During conjugation, one gene (A) is found to transfer to the recipient bacteria 26 minutes following the start of conjugation, w
AnnyKZ [126]

Answer:

a. All of the answers are correct.

Explanation:

During conjugation a bacteria transfers it's genetic material to another bacteria. The genetic material has genes in a particular order so we can easily know the order of the genes through experimentation. The transfer of genes occurs as per the time allowed. If two genes are nearby then they will be transferred one after the other.

For example in the given question, gene A was transferred to recipient bacteria in 26 minutes, gene M was transferred in 37 minutes while gene T was transferred in 45 minutes, it simply means that the order of genes is A M T. Gene M was transferred to another bacteria after A was transferred because time required to transfer it is 37 minutes which is less than time required to transfer A which is 26 minutes. Gene T took maximum time to get transferred so it will be last to be transferred.

After calculation, we can easily infer that the genetic distance between A and M is 11 minutes (37 minutes - 26 minutes = 11 minutes). Similarly we can get genetic distance between A and T as 19 minutes and between M and T as 8 minutes. So all the given options are correct.

8 0
3 years ago
A sperm fertilized an egg. Which two structures will the fertilized egg contact?
iVinArrow [24]

The lining of the uterus, and the fallopian tube.

5 0
3 years ago
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