Scientists can best use scientific argumentation to evaluate a scientific claim by developing a hypothesis that explains why the data support the claim (option A).
<h3>What is a hypothesis?</h3>
A hypothesis is a a tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation and/or experimentation.
According to the scientific method, which is the method of discovering knowledge about the natural world based on making falsifiable predictions (hypotheses) and testing them empirically, the following are employed:
- Asking a question/Making an observation
- Constructing a hypothesis
- Testing the hypothesis
- Analyzing the data
- Making a conclusion
Therefore, scientists can best use scientific argumentation to evaluate a scientific claim by developing a hypothesis that explains why the data support the claim.
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Infectious myringitis is caused by the same viruses or bacteria that cause middle ear infections. In this disease, vesicles develop on the tympanic membrane. It is a communicable disease and is very common among young children as compared to adults. So, a child who has this and attends preschool can share this condition and spread it to others.
Option (B) single-celled organisms, and multicelled organisms are the correct answer.
Protists represent an important evolutionary step between single-celled organisms and multi-celled organisms.
<h3>
What are Protists?</h3>
- Protists are eukaryotes because they have a nucleus and other organelles that are attached to membranes.
- Protists have a distinctive central compartment termed the nucleus, which is shared by all eukaryotic cells and contains their genetic material.
- Organelles, specialized pieces of cellular machinery, carry out specific tasks within the cell.
- Plastids are found in photosynthetic protists like numerous kinds of algae.
- Protists' DNA resembles that of cyanobacteria.
- Cyanobacteria are single-celled organisms, whereas algae are multi-celled organisms.
We can infer from this debate that protists are a crucial evolutionary step between single-celled organisms and multi-celled organisms as they share many characteristics with both cyanobacteria and algae.
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The reaction of the calcium metal with potassium chloride is a displacement reaction, which results in the formation of the calcium chloride, and potassium ions. This reaction can be written as follows in a balanced form:
(s) + 2KCl(aq) → Ca (s) + 2 (aq)
The equation now on the right and left side of the reaction are both balanced and equal. Hence, the correct answer is 'Option A'.
B. They come from other living cells because all living things come from other living things.