course material

1. Saudi Electronic University Bioaccumulate Metals in Living Organisms
Paper
Please view explanation and answer below.Outline1. Introduction•Definition•Background
information•Thesis statement2. The behavior of bioaccumulate metals in humans•Method
of accumulation•Impact of accumulation3. The behavior of bioaccumulate metals in
animals•Method of accumulation•Impact of accumulation4. The behavior of bioaccumulate
metals in plants•Method of accumulation•Impact of accumulation5. Conclusion6.
ReferencesPlease view explanation and answer below.find the second filePlease view
explanation and answer below.1Bio Accumulate MetalsStudent’s NameInstitution
AffiliationCourse NameInstructors NameDate2Bio Accumulate MetalsBioaccumulation is
the process through which chemicals/toxins (heavy metals) enter thefood web and build up
in living organisms. Heavy metals do not biodegrade, meaning they canlast forever in the
bodies of living organisms. Through biomagnification, they are passed fromone trophic level
to the next, increasing the concentration level in the food web. The heavymetals get into the
food chain through the smallest microorganisms and end up in humans. Whenthe heavy
metals/ toxins find their way into living organisms, they are distributed, stored,
brokendown, or excreted depending on the metal that has found its way onto the
organism’s body. Thestorage, excretion, and metabolism stage ensures that the
concentration of the metals within thebody of an organism is decreased. However, due to
constant exposure to the same chemical overa long period, the amount of metals
accumulated inside the organism and the amount exiting thebody reaches a state of
dynamic equilibrium (Ahmed et al., 2019).The heavy metals enter the food chain through
tiny organisms that are the lowest in thefood chain and are passed down to the organisms
that are highest in the food chain. The higherthey go in the food chain, the higher the effect
they cause and the higher the concentration. Mostmetals enter the environment through
pollution (disposal of chemicals into water bodies), andthey find their way into the
organisms at the bottom of the food chain, for instance, fish. Sincethe metals cannot be
broken down and, in some instances, the organisms have reached thedynamic equilibrium,
some components of the metal ingested are stored in the organism’s fattytissue. The larger
organisms eat the smaller organisms, and thus the metal is passed higher thefood chain
increasing the level of meta concentration. The animals in the food chain, likehumans who
feed on fish, get higher doses of the metals already absorbed by the smallerorganisms
(Rubalingeswari et al., 2021).3One of the organisms that help in passing the heavy metals is

2. fish. Fish is usually at thetop of their food chain, and since they live in water, they are
exposed to most of the heavy metalsthat are disposed into the sea and water bodies. They
take in plankton laced with heavy metals,and in the long run, they are eaten by human
beings. O Once the heavy metal reaches a higherlevel, the fish cannot break them down;
they are thus passed up the food chain. When they reachhigher organisms’ bodies like
humans, they cause unprecedented effects (Rubalingeswari et al.,2021). The most common
heavy metal accumulation is mercury, which results from humanseating larger fish like
tuna. Since the chemicals blend with the other body chemicals, excretingthe metals is tough,
and some are not broken down. This leads to higher levels which eventuallyaffect the life of
human beings or the organism at the top of the food chain(Ahmed et al., 2019).In
conclusion, heavy metals get into the body of the organisms at the bottom of the foodchain;
they are broken down, excreted, and this organism stores some; however, some metals
areretained within this organism. The metals are passed to the organism at the top of the
food chainthrough biomagnification. The higher the food chain, the more dangerous the
metals since theyare in higher concentration.4ReferencesAhmed, A. S., Rahman, M., Sultana,
S., Babu, S. O. F., & Sarker, M. S. I. (2019).Bioaccumulation and heavy metal concentration in
tissues of some commercial fishesfrom the Meghna River Estuary in Bangladesh and human
health implications. Marinepollution bulletin, 145, 436-447.Rubalingeswari, N.,
Thulasimala, D., Giridharan, L., Gopal, V., Magesh, N. S., & Jayaprakash,M. (2021).
Bioaccumulation of heavy metals in water, sediment, and tissues of majorfisheries from
Adyar estuary, southeast coast of India: An ecotoxicological impact of ametropolitan city. …