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skelet666 [1.2K]
3 years ago
6

Which of the following examples shows the influence coal has had on human activity?

Biology
1 answer:
Ghella [55]3 years ago
8 0

Answer:

The correct option is A. Coal use in steam engines led to easier access to goods.

Explanation:

Coal is used in steam engines as a fuel. Coal is one of the cheapest source of energy and hence it has been serving mankind with various benefits since a long period of time.

The coal-based steam engines played a very important role in the developments made during the Industrial Revolution. Many industries started using coal as a power material and made progress.

The steam engines made it possible to transfer goods from one place to another very easily. As coal was a cheap source, hence trading of goods by steam engines was not very costly.

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Which structure in the figure below is commonly injured by people inserting cotton swads or other objects into their ears?
Genrish500 [490]

I think its a

idk who knows

7 0
3 years ago
Read 2 more answers
What are the two factors that define our traits?
coldgirl [10]

There are a few theories as to what defines our traits to create our personality

According to one such theory, Dan P. McAdams claims our personalities develop in <span>three </span>stages:

<span>Our genes cause genetic mutations forming a 'draft' personality.During our early upbringing, our parents, teachers and friends treat us differently based on our looks and draft personality.Once we are older we then form a narrative of our lives based on our experiences growing up, and make decisions consistent with the character we have created.</span>

So our traits started from slight genetic variances, which effected how we were treated, which then shapes our own self-narrative. So really, our personality is one big story that we tell ourselves, and our childhood was the prologue to that story.

6 0
3 years ago
You were instructed to compare growth on the na and columbia cna plates. why not simply compare the organisms to each other on t
Triss [41]

Answer:

Columbia CNA agar is a type of selective medium employed in culturing gram positive cocci and distincting it from clinical and nonclinical samples made up of a combined flora. Columbia CNA SHOULD NOT BE COMPARED with general culture medium such as the Nutrient agar which provides the necessary nutrients for the growth of diverse species of organisms.

Good growth stands for the growth of organisms picked or needed to culture with the required amount of colonies on Columbia CNA. Poor or no growth infers on the NA availability for the growth of the specimen organism, it is absent in the culture as it lacks the needed amount of colonies.

In conclusion, It may look good to look for the similarities and differences of the organisms to one another on the CNA plate since the NA plate is mainly the control and is used to evaluate the growth quality of the bacteria, contrasting it to the CNA plate is of no use as its main reason would be futile.

4 0
2 years ago
Describe the differences between a chromosome and a DNA molecule.
patriot [66]
A chromosome is made of both one DNA molecule wound around small protein molecules whereas DNA is just one large molecule called deoxyribose nucleic acid.
4 0
3 years ago
The carbohydrates attached to some proteins and lipids of the plasma membrane are added as the membrane is made and refined in t
Nostrana [21]

Answer:

Inside.

Explanation:

The organelle of the eukaryotes are membrane bound and performs important function. The endomembrane system in eukaryotes perform the protein synthesis, transport and sorting of proteins.

The carbohydrates are the important signaling molecules that helps in the destination of the particular protein. These carbohydrates are generally present on the inside of the vesicle membrane and determines the localization of protein.

Thus, the correct answer is inside.

6 0
3 years ago
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