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allochka39001 [22]
3 years ago
5

Oil, natural gas, and coal are considered to be nonrenewable resources. Why are these fuels considered to be nonrenewable? A) Th

e burning of these fuels does not allow the waste products to be recycled. B) These fuels are available in a limited supply--when the fuel is used it is no longer available. C) The amount of pollution released from the use of these fuels is much higher than with renewable sources. D) The technology used to generate energy by the use of these fuels is much older and less efficient than current technology.
Biology
1 answer:
Nat2105 [25]3 years ago
4 0

The answer is B) These fuels are available in a limited supply- - when the fuel is used it is no longer available.

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Characterize questions that cannot be answered scientifically
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Opinions. Like Red is Better Than Blue. Pancakes are better than waffles. ETC. 
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Which change is an environmental effect of farming?
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Answer:

Agriculture contributes to a number larger of environmental issues that cause environmental degradation including: climate change, deforestation, biodiversity loss, dead zones, genetic engineering, irrigation problems, pollutants, soil degradation, and waste.

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3 years ago
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Describe pulmonary circulation pathway using the following terms: deoxygenated blood, left atrium, lungs, oxygenated blood, pulm
ehidna [41]
Definition:
                  "The type of circulation pathway in which venous blood is passed
                   <span>from the right atrium of the heart through the right ventricle  and 
</span>                   pulmonary<span> arteries to the lungs where it is oxygenated and its                             return via the </span>pulmonary<span> veins to enter the left auricle and                                                      participate in the systemic </span>circulation"<span>.

Explanation:
                     There are two circulatory path in cardiovascular system namely pulmonary circulation and systemic circulation. Pulmonary circulation path allows for blood circulation through lungs for oxygenation while systemic circulation allows for transport of oxygenated blood to all parts of the body.

Pulmonary Circulation Pathway:
                                                      Pulmonary circulation pathway consist of:

1. Superior and inferior vena cava:
                                                       De-oxygenated blood from lower parts of the body enter to right atrium through inferior vena cava. Similary, deoxygenated blood from upper parts of the body enter to right atrium through superior vena cava.

2. Right atrium and right ventricle:
                                                          From right atrium the blood passes to right ventricle through tricuspid valve. 

</span><span> 3. Pulmonary artery:
                                Afterwards, the blood enters the pulmonary artery via the pulmonary valve. The pulmonary artery divides into two arteries with one artery entering the right lung and the other artery entering the left lung. When the blood reaches the lungs through the left and right pulmonary arteries, it moves over alveoli via the capillary beds. </span><span>

</span><span>4. Left atrium and left ventricle:
                                                 After the blood gets oxygenated, it moves back to the heart and this time moves into the left atrium, completing the pulmonary circulation path.</span><span>
                        
</span>

6 0
2 years ago
Describe the function of each organelle.<br> Endoplasmic reticulum
Svetach [21]

Answer:

Explanation:

nucleus: the center of the cell that contains the genetic material. The nucleus is like the "Brain" of the cell.

ribosome: is a large complex of RNA and proteins. Ribosomes are the cell structures that make protein. They are found in the endoplasmic reticulum.

endoplasmic reticulum: a network of tubular membranes in the cytoplasm. They fold protein molcules in sacs and transport these proteins in vesicles to the golgi apparatus.

Golgi Apparatus: stores and modifies proteins and prepares to transport them to different parts of the cell.

I hope this helps.

4 0
2 years ago
There are several factors that lead to genetic variation in organisms. Which of the following is NOT one of those factors?
PilotLPTM [1.2K]

Answer:

The correct answer is - A. Producing offspring that are genetically identical to the parents

Explanation:

Genetic variation is the difference between the population or individual on a genetic level. If there is a change in the DNA of individuals or among the population, it is genetic variation in these organisms.

There are several factors that result in genetic variation such as random mating, random fertilization, mutation, crossing over during meiosis, and many more. Producing genetically identical offspring to the parents is not a factor as there is no variation is taken place on the genetic level.

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