The correct answer is (C) Erupting volcanoes release many toxic gases.
Air pollutants are gases that harms the environment and human health. Some air pollutants come from volcanic eruption are toxic( like sulphuric acid) and harm our health. Volcanic eruption produce soot and ash into the atmosphere , which reduces sunlight and lowers temperatures. Eruption also produce carbon dioxide, carbon monoxide and other polluting gases
Some other examples of natural air pollutants are:
1. Radon is a radioactive gas that seeps from the ground in some areas, and fog and mist are both dense water vapor at ground level that obscures vision. 2. Ozone, a chemical formed naturally by the action of sunlight on oxygen, is a pollutant at ground level but beneficial in the upper atmosphere. It damages plants and causes breathing problem in the lower atmosphere.
Explanation:
Circulatory as the word suggests, circulates throughout the body. Circulatory system is a group of network which consist of blood, blood vessels, and the heart. This network in turn supplies the necessary tissues in the body.
The circulatory system passes through each and every organ and system in the body. Our body cells and the circulatory system are connected in such a way that the transpiration of oxygen is done in an efficient manner. Apart from this, circulatory system also plays an important role in our digestive system.
At the organ level, the circulatory system works to deliver oxygen, nutrients, hormones, and other essential substances to various organs and tissues in the body, while also removing waste products and carbon dioxide.
The process starts with the heart, which acts as a powerful muscular pump. The heart contracts rhythmically to pump oxygenated blood out of the left side of the heart into the main artery called the aorta. From the aorta, the oxygenated blood is distributed to all organs and tissues of the body through a branching network of arteries. Arteries progressively divide into smaller arterioles, ensuring blood supply reaches individual organs.
Once inside the organs, arterioles further divide into microscopic blood vessels called capillaries. Capillaries are crucial in the exchange of oxygen, nutrients, and waste products between the blood and the surrounding cells. Oxygen and nutrients diffuse out of the capillaries into the cells, providing them with the necessary substances for their function and survival. Meanwhile, waste products and carbon dioxide produced by the cells diffuse from the cells into the capillaries, which then carry them away for elimination.
After passing through the capillaries, blood begins its journey back to the heart. Capillaries converge to form venules, which then merge to form larger veins. Veins gradually increase in size and converge into the superior and inferior vena cava, which return deoxygenated blood to the right side of the heart. The right side of the heart pumps this deoxygenated blood to the lungs through the pulmonary arteries, where it gets oxygenated and releases carbon dioxide. Oxygenated blood then returns to the left side of the heart through the pulmonary veins, completing the circulation loop.
This continuous cycle of blood flow ensures that every organ and tissue in the body receives the necessary oxygen and nutrients while waste products are efficiently removed. It is through this complex network of blood vessels and the pumping action of the heart that the circulatory system operates at the organ level, maintaining the overall functioning and health of the body.
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Answer:
b. Air pollution, Contributed to the heat wave in Europe and the thousands of death in France.
Explanation:
Answer:
letter C
Explanation:
The question relates to calculating speed through the formula 'averagespeed = total distance/ total time'. LeBron and George are using this method on a 150-meter skateboard trip, recording the time it takes for each equal section. The situation mirrors similar examples, such as Jill's flyer distribution and the store trip.
The subject of the question seems to be about calculating speed using the formula for speed, which is distance/time. In LeBron's case, he and his friend George are observing and recording the time it takes LeBron to coast a distance of 150 meters on his skateboard. They have divided the total distance into equal sections and noted down the time for each section.
To find the average speed, we would need to total all the times and divide the total distance by this time. This method of calculation is similar to the example provided, where Jill had a total trip distance and total trip time and was able to find her average speed by dividing distance by time, and it also closely mirrors the definition of averagespeed highlighted in the second example.
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The part of atom that is responsible for chemical bonding is electrons. The correct option is b.
Atomic chemical bonds are formed by electrons. They are subatomic particles with negative charges that move in distinct energy levels or shells surrounding an atom'snucleus.
Atoms interact with one another during chemicalprocesses to produce a more stable electron configuration.
To obtain a full outermost electron shell, sometimes referred to as the octet rule, atoms can either receive, lose, or share electrons. Atoms are able to form chemicalbonds, such as ionic bonds, covalent bonds, and metallic bonds, thanks to this interaction of electrons.
These bonds are crucial for the synthesis of molecules and compounds. The actions and configuration of electrons govern the chemistry and reactivity of elements.
Thus, the correct option is b.
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Your question seems incomplete, the probable complete question is:
which part of the atom is responsible for chemical bonding?
a) Protons
b) Electrons
c) Neutrons
d) Nucleus