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yanalaym [24]
3 years ago
10

Edward Jenner’s smallpox inoculation experiment was based on an observation by a dairymaid that she could not get smallpox becau

se she had already had cowpox. How did Jenner form his hypothesis from this observation?
Biology
1 answer:
9966 [12]3 years ago
7 0

Edward Jenner inferred that a person who once had small pox cannot have it once again. So something is there in these persons which grows after the initial infection which interferes with the secondary infection resisting it.

<h3><u>Explanation:</u></h3>

Edward Jenner is called the Father of Vaccination. Jenner noticed that the milkmaids who deal with the cows all the time don't generally suffer from the cowpox or small pox. Then as an Experiment, he took some sample from the pustules of the cow having pox and then cleaned it and injected the sample into a healthy child. Then when everyone of the locality suffered from the same disease, that child remained healthy. So that lead to infer that there are something in the pustule which lead to resist the secondary infection of this disease. So this lead to the invention of vaccines.

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What is the water table?
frez [133]

Answer:

C: The top of a saturated aquifer

Explanation:

The water table is the upper surface of the zone of saturation. This zone of saturation is where pores and fractures of the ground get saturated with water. It can also be simply explained as, the upper level, below which the ground is saturated.

5 0
3 years ago
Match each step of the scientific method with its description
sergij07 [2.7K]
Step 1: State the problem
description: define the problem as clearly as possible.
Example: The front brakes are making a loud noise.

Step 2: Gather information
description: Gather data about the problem and make good observations using all 5 senses.
Example: He checked all his other songs and found they all did the same thing.

Step 3: Form a hypothesis
description: a prediction that can be tested.
Example: Luke decided he would try a different set of headphones and see if that helped.

Step 4: Test the hypothesis
description: Use an experiment to test your logical answer to the problem.
- Use controlled conditions to test your hypothesis
A. Controlled experiment: Everything in an experiment that is the same except for the variable.
~ Variable: Something in an experiment that you change, only one per experiment.
~ Constant: Factors in an experiment that stay the same.
Example: Luke asked to borrow 3 diffetent friends' headphones. All the headphones were the same brand. After switching the ears, he found all the headphones worked. However, Luke tried the headphones in his friend's ipod and found they didn't work.

Step 5: Analyze Data
description: go over all the data you have and go over conclusions.
Example: Luke wrote down all his findings and read over all his notes.

Step 6: Draw a conclusion
description: Based on data and observations, conclude the answer to your hypothesis.
- should be logical answers to the question based on data and observations.
- if needed, retest this theory ( possibly with a new hypothesis)
Example: Luke concluded with his data and and observations that his headphones were broken and he needed a new pair.

Step 7: Share results
description: report journal to classmates, or publish a journal of findings.
Example: Luke shared his findings with his mom and friends, and his mom bought him another pair for his birthday.




I hope this helps!
6 0
3 years ago
The brain coordinates the physical changes that occur during puberty and the ______ plays an especially important role in this p
levacccp [35]

Answer: Hypothalamus

The brain coordinates the physical changes that occur during puberty and the hypothalamus plays an especially important role in this process.

Explanation:

Since the hypothalamus controls the secretion of hormones from the pituitary gland, and the pituitary gland, also known as master gland, controls the activities of all other glands like the following:

- gonads (ovaries and testes), responsible for producing many of the sex hormones and hence, development of sexual characterictics

- thyroid, responsible for producing thyroxine, responsible for body metabolism and development.

Thus, hypothalamus plays important role in puberty

4 0
3 years ago
Animals respond to threats in their environment by attacking or escaping. Either response is the result, mostly, of interactions
kifflom [539]

Answer:

Animal and humans

if im right pls give brainliest

Explanation:

3 0
3 years ago
Which gas does not occur naturally in the atmosphere in any amount but was solely created by human activity? Support your answer
SpyIntel [72]

Answer:

Carbon monoxide.

Explanation:

Carbon monoxide is a gas that consists of an oxygen and a carbon to be able to fulfill the complete molecule, it is a potentially dangerous gas for life on this earth.

On the other hand, what differentiates it from carbon dioxide is that it has two oxygens that are coupled with a carbon to fulfill the complete molecule.

Both gases are pollutants, and produced by man, it is considered that these in high partial pressures in the atmosphere generate a mortal potential for humans since they have more affinity with the hemoglobin protein that is the human gas transporter par excellence, the which oxygenates the tissues.

If the oxygen drops in partial pressure and these toxic gases increase, the hemoglobin having a higher affinity will bind to them and toxify the human body, preventing oxygenation.

7 0
3 years ago
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