Which of the following best explains why air pollution that was once blamed for global cooling is now considered responsible for global warming? a. Pollution began reflecting sunlight and heat rather than absorbing it. b. Evidence of global warming became overwhelming. c. Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it. d. Congress required scientists to assign a cause to global climate change.
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Answer: c. Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it.
Scientist mistakenly thought pollution reflected sunlight and heat rather than absorbed it. This best explains that air pollution that was once blamed for global cooling is now considered responsible for global warming because the carbon dioxide from greenhouse effect will reflect the sunlight and will split the UV rays and prevent them to enter inside the earth. But carbon dioxide is responsible for increasing the global temperatures.
Answer:
(c) Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it.
Explanation:
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Final answer:
The circulatory system is responsible for the transportation and delivery of materials in living organisms.
Explanation:
The circulatory system, also known as the cardiovascular system, is a complex network of blood vessels, the heart, and blood. Its primary function is to transport oxygen, nutrients, hormones, and waste products throughout the body. The heart pumps blood, while arteries carry oxygenated blood away from it, and veins return deoxygenated blood to it. This system sustains life by ensuring the delivery of essential substances to cells and tissues.
The structure responsible for the transportation and delivery of materials in living organisms is the circulatory system. In humans, the circulatory system consists of the heart, blood vessels, and blood. The heart pumps oxygenated blood to the body's organs and tissues through the arteries, and deoxygenated blood is returned to the heart through the veins.
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The difficulties that a cell faces as it increases in size are a reflection of the fact that cells are complex systems.
As a cell increases in size, it faces a number of difficulties. These include:
Diffusion: As a cell gets larger, the distance between the cell membrane and the center of the cell increases. This makes it more difficult for nutrients and oxygen to diffuse into the cell, and for waste products to diffuse out of the cell.
Surface area to volume ratio: The surface area to volume ratio is a measure of how much surface area a cell has relative to its volume. As a cell gets larger, its surface area to volume ratio decreases.
This means that the cell has less surface area to exchange nutrients, oxygen, and waste products with its environment.
Cytoskeleton: The cytoskeleton is a network of fibers that provides support and structure for the cell. As a cell gets larger, the cytoskeleton must become more complex and stronger in order to support the increased weight and volume of the cell.
Organelle function: As a cell gets larger, its organelles must also become larger and more numerous in order to meet the increased metabolic demands of the cell. However, there is a limit to how large and numerous organelles can become before they become inefficient or even dysfunctional.
For all of these reasons, there is a limit to how large a cell can grow. Once a cell reaches a certain size, it becomes more efficient for it to divide into two smaller cells.
This allows the new cells to have a more favorable surface area to volume ratio and to have more efficient access to nutrients and oxygen.
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Answer : If we later run the same distance in less time, the speed will be increases.
Explanation :
First we have to calculate the speed.
Formula used :
Given:
Distance = 100 m
Time = 25 s
Now put all the given values in the above formula, we get:
From the formula we conclude that, the there is an inverse relationship between speed and time at constant distance.
As, the time increases, the speed will be decreases and vice-verse.
As per question, if we later run the same distance in less time, the speed will be increases.
Hence, if we later run the same distance in less time, the speed will be increases.
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I think it brings to the warm places cold air and to cold places it brings warm air
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b. another organism
c. an ecosystem
d. its community
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The answer is A. An abiotic factor