1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nirvana33 [79]
1 year ago
6

the deformity rate in baby birds from nests in pesticide-sprayed fields is compared to the deformity rate in birds from nests in

unsprayed fields.
Biology
1 answer:
mr_godi [17]1 year ago
8 0

In natural experiments, the researcher compares groups exposed or not to exogenous agents, but does intervene in group composition or independent variable modification. This is a natural experiment.

<h3>What is a natural experiment?</h3>

There are two types of investigation strategies,

  • Natural investigation
  • Manipulative investigation

In a natural experiment the researcher does not intervene in the creation of treatment and control groups.

There is an exogenous agent, such as a natural phenomenon, that influences the study groups and that acts as the treatment.

The researcher takes advantage of these events to use these random groups to compare them in the study.

The researcher chooses exposed groups (experimental groups) that might have been affected by the natural event and other groups that have not been affected (control groups).

In the exposed example,

  • Exogenous agent ⇒ Treatment ⇒ pesticide use
  • Exposed group ⇒ Experimental group ⇒ birds from nests in pesticide-sprayed fields
  • Not exposed groups ⇒ Control groups ⇒  birds from nests in unsprayed fields.

Since the researcher does not voluntarily modify the independent variable to observe a response in the dependent variable, this experiment could not be considered to be manipulative.

This is an example of a natural experiment in which the researcher chooses groups exposed to different conditions to compare them and analyze the effect of the pesticide.

You can learn more about natural experiment at

brainly.com/question/5001950

#SPJ1

You might be interested in
When in the cell cycle does independent assortment of chromosomes occur?
Troyanec [42]
Process of cellular respiration.

3 0
3 years ago
Insertion and deletion mutations are said to cause shifts in the reading gram of the mRNA. Substitution mutations do not cause t
PSYCHO15rus [73]

Explanation:

A frameshift mutation  is an insertion or deletion in a sequence of DNA which disrupts the way the code is read. It occurs when the codons undergo a disruption through the deletion or insertion of one or multiple nucleotides (given that the number removed or added are not multiples of 3) - this alters the open reading frame; the amino acids produced through translation simply occur in a different sequence.

Further Explanation:

During the process of cell division, spontaneous changes within the genome can arise. These mutations are errors occur when copies of the DNA within the cell are made; mutations may range from small changes called single nucleotide polymorphisms, to large scale deletions, and additions which span multiple genes. There are two types:

  • somatic: these only occur within certain cells, and arise from environmental factors such as UV light
  • hereditary: occur within germ cells of the parent and later the fertilized egg which forms a zygote; these are present within all cells of the new organism.

Learn more about mutations at brainly.com/question/4602376

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly  

4 0
3 years ago
Which would a scientist most likely do before asking a question that could lead to a scientific experiment?
fgiga [73]

Answer:

form a hypothesis

Explanation:

7 0
2 years ago
Read 2 more answers
Select all the correct answers.
solong [7]
I only know 2 and 3 are correct. I’m not sure about the last one.
7 0
3 years ago
Read 2 more answers
1. Which part of the cell membrane acts like bridge and only allows certain materials in and out
Sergeeva-Olga [200]

Answer:

1.phospholipid bilayer

2. selectively permeable

3 0
3 years ago
Other questions:
  • According to Piaget, children have acquired the cognitive skill of conservation when they're able to
    5·1 answer
  • During DNA replication, several natural proofreading mechanisms are in place to prevent an error from occurring. However, errors
    10·1 answer
  • What are the subunits called that make up carbohydrates?
    15·1 answer
  • What types of gases were found in the primordial earth?
    15·1 answer
  • Water changes temperature easily .true or false
    8·1 answer
  • 7. Calculate: Look at the column labeled "Mean Orbital Radius (AU)" in the chart from question 6. Use a calculator to cube ("thi
    7·1 answer
  • John and Jane are planning a family, but since each has a brother who has sickle-cell disease, they are concerned that their chi
    13·1 answer
  • 4. Write the building units of the below given nutrients.
    10·1 answer
  • In eukaryotes, where is the genetic material for the cell located
    7·1 answer
  • What is a compound eye?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!