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Ivan
3 years ago
8

7 + 7 + (–1) = A. 13 B. 10 C. 16 D. 7

Biology
1 answer:
Burka [1]3 years ago
4 0
Step 1. Simplify brackets

7+7-1

Step 2. Simplify

13

Done! :) Your answer is A. 13 Hope this helps!
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A response that is uniquely directed against pathogenic bordetella pertussis would involve what component?
xxMikexx [17]

Answer:

Antibodies

Explanation:

Bordetella pertussis is an obligate human pathogen and is the etiological agent of whooping cough. It is known to be an opportunistic organism.

The pathogenic mechanism of Bordetella pertussis is also known as virulence factor. These virulence factors are known to include adhesins such as filamentous haemagglutinin, fimbriae and pertactin, which allow B. pertussis to bind to ciliated epithelial cells in the upper respiratory tract.

It is known to be the agent of whooping cough, a highly contagious respiratory disease, dramatic for infants and also for elderly and pregnant women.

In this case, the antibodies will be the response that is uniquely directed against the organism. It is said earlier that this organism is an opportunistic one, this means that it causes infection when the immunity is down. So, when the immunity is empowered , it will definitely fight against the organism

3 0
2 years ago
When faced with a complex engineering problem, the best strategy usually involves A - Breaking the problem down into smaller pro
irinina [24]

When faced with a complex engineering problem, the best strategy usually involves( A ) Breaking the problem down into smaller problems and solving them individually.

Explanation:

Th first step of solving a complex problem involves problem identification-it means what exactly is the problem then we try to determine the possible sub-groups in which the problem can be further divided  and then numbering the sub groups.

The process of sub-grouping means that we are sub dividing the problems and then working upon the problem that needs the attention first and then according solving the other sub categories of the problem.

This method helps in breaking the complex problem into a series of small task that can be easily solved in a sequential manner .Thus the complexity of the problem gets reduced when it is divided into a number of small problems.

6 0
2 years ago
Some people use paint to protect the outside of their houses. Why does a house painted a dark color get hotter than a house pain
Trava [24]

Answer:

Dark color absorb more photons and thus gets more hot

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Dark color is dark b/c it absorbs different wavelengths of light (think about little photons of light vibrating slighting differently) .This means it absorbs a lot of photons which makes it warmer.

If a thing is white, that means it reflects all lights and absorbs none. Thus, since it does not absorb photons (little packets of energy which is light), the house does not get warm.

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2 years ago
Lilah’s family has a large garden in their backyard. after learning about the role of organisms in an ecosystem, lilah compares
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An ecosystem is a self supporting system in which there is a flow of materials and energy.

<h3>What is an ecosystem?</h3>

An ecosystem is a self supporting system in which there is a flow of materials and energy.

Let us now see the role of each organism in the small ecosystem.

  • flower - producer
  • butterfly - primary consumer
  • bird - secondary consumer
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Learn more about ecosystem: brainly.com/question/13979184

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Respiration is the answer
5 0
3 years ago
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