Answer:
Oxygen is essential for respiration because the body uses it to 'burn' food molecules. Animals take in oxygen when inhaling and give off carbon dioxide when exhaling. ... This is why rescue breathing works - it can supply a non breathing patient with enough oxygen to support life.Nitrogen is essential for all living things because it is a major part of amino acids, which are the building blocks of proteins and of nucleic acids such as DNA, which transfers genetic information to subsequent generations of organisms.
Explanation:
Free oxygen can be problematic for organisms due to its high reactivity and the production of reactive oxygen species (ROS), causing oxidative stress and various health problems. Excess free oxygen can lead to diseases in humans, while some organisms cannot tolerate free oxygen at all and will die if exposed to it.
Free oxygen can be a problem for many organisms due to its high reactivity. In aerobic organisms, free oxygen can lead to the production of reactive oxygen species (ROS) such as superoxide radicals, hydrogen peroxide, and hydroxyl radicals, which can damage cellular structures and molecules, including proteins, lipids, and DNA. This can result in oxidative stress and lead to various health problems.
For example, in humans, excess free oxygen can cause damage to cells and tissues, leading to diseases such as cancer, cardiovascular disease, and neurodegenerative diseases. Organisms that have evolved to survive in low-oxygen environments, such as certain bacteria and parasites, may be particularly sensitive to the presence of free oxygen and can even be killed by exposure to high levels of it.
In contrast, other organisms, such as obligate anaerobes, cannot tolerate the presence of free oxygen at all and will die if exposed to it. These organisms lack the enzymes and metabolic pathways required to deal with the toxic effects of oxygen. Examples of obligate anaerobes include some types of bacteria that live in environments without oxygen, such as deep-sea hydrothermal vents or the intestines of animals.
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A.
acidic
B.
fertile
C.
porous
D.
permeable
Answer:
D
Explanation:
Being permeable means that it is easy for liquids to pass through it. Liquids, being in this case water, passing through water fast and easy means that the soil is permeable
Answer:
chlorine.
Explanation:
my test said it was right
Chromosomes are located within the nucleus of a cell.