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Alex777 [14]
3 years ago
6

Which factor could contribute to an overall population decrease? A) decreased birth rate B) increased immigration C) decreased i

nfant mortality D) decreased overall mortality
Biology
2 answers:
adell [148]3 years ago
6 0

The correct answer is option A) decreased birth rate.

The decrease in the birth rate would lead to overall decrease in the population, as the number of new individuals added to the population would be less.

Reason for the incorrect options:

An increased in the immigration of individuals, would increase the overall of number of individuals in a particular area, so, it would lead to increase in population.

The decreased infant mortality or overall mortality would allow the survival of more individuals in a particular region, which would cause an increase in the population.

Monica [59]3 years ago
3 0
<span> A) decreased birth rate</span>
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Plz help!!!!<br> Kinda in a hurry to catch up on biology rn anything can help!!!
luda_lava [24]

Answer:

16. Control group: Subject A

17. Independent (manipulated) variable: Type of powder

18. Dependent variable: Itching time

19. Explain whether the data supports the advertisement´s claims about its product. Yes, it does.

Explanation:

  • Control group: The control group is used to identify if there are any other factors influencing the results obtained by the treatment in the study (in this case, the new product), from the results that might be a consequence of other factors. The control group must be selected from the same population as the treatment group. Data from an experimental group are compared with the data from a control group. These two groups are identical in all aspects except for the independent variable that the researcher changes in the experimental group to observe how they affect the individuals.  

The experimental group is the one that receives the experimental procedure, with changes in the independent variable.  There can be several experimental groups. In this case, the experimental group is subject B.

  • Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it. It changes to analyze its effects on the dependent variable. Usually, the independent variable is represented by the X letter. In the exposed example, the type of powder is the independent variable.  
  • Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. In the exposed example, inching time is the dependent variable, that depends on the type of powder used.
  • The data <u>does support</u> the advertisement´s claims about its product. The effect of the new product lasts 50% more than the original product. The old powder produced itching for 30 minutes, while the new product produced itching for 45min (15 more minutes, 50% more).
4 0
2 years ago
Two different mature mRNA transcripts are produced from this gene, one is approximately 2000 nucleotides long, the other is appr
klemol [59]

Answer:

Alternative splicing explains how it works

Explanation:

Two different transcripts can be produced from one single gene according to the nature of exons and introns of every transcript, which means that a group of exons will form the future mRNA molecule. The nature of this phenomenon is based on the function and local that every transcript will act. These mRNA transcripts are the result of how the RNA polymerase and transcription factors interacts with DNA molecule and therefore selects the number and the size of the exons and introns of each mature mRNA transcript.

8 0
3 years ago
The energy an organism requires to transport materials and eliminate wastes is obtained directly from
nirvana33 [79]

Answer:

ATP

Explanation:

ATP is regarded as 'root of energetics' for living organisms. So, the organisms utilizes ATP to transport material and eliminate wastes from the body. Not only these functions are carried out by ATP but also several others infact all energy requiring processes are carried out ATP. e.g. muscle movements, neurotransmission, heart beats and various chemical reactions in the body all are carried out with the help of ATP.

In animals ATP is produced from the breakdown of glucose in the cellular respiration, glucose is obtained from the diet we take in. In plants ATP is generated from the process of photosynthesis. The source of energy within ATP is phosphate bonds, the breakdown of one phosphate bond while conversion of ATP into ADP produces or releases 30.6 KJ/mole of energy.

6 0
3 years ago
The chaparral biome has little biodiversity and is home to only a few well-adapted species.
Ulleksa [173]
True! this statement is true 
5 0
3 years ago
Read 2 more answers
2 reasons why to be against genetic manipulation
zysi [14]
1.It is not natural.
2.It can came up with side effects and unbalance some species.
6 0
3 years ago
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