Nowadays, more people are becoming aware of the harm that the human beings cause of animals and some argue that animals are not necessary to use for food, clothing or medical research. I completely agree with 
this
 position Linking Words
as lately,
 many alternatives have been created to stop our dependency in animals. 
To some extend, animals are really necessary for human beings. By nature, humans Suggestion
, as lately as
have get
 used to eat animals, since meat from cows, pork and chicken provide a high source of protein and energy. Suggestion
have gotten
have got
Furthermore
, in the ice age, humans spent a big part  of their times hunting animals to survive, Linking Words
thus
, getting an instinct to eat them. When it comes to medical research, many new discoveries have been Linking Words
done
 due to the experiments done in animals.At produced by a manufacturing process
made
first
, vaccines and drugs are tested on animals which can predict whether it can be used on human beings. 
Linking Words
However
, our dependency to use animals for certain activities can be dangerous and harmful to some extents. One of the fields which harm more the environment is the agriculture, it uses a big proportion of water to clean the leftover when they kill the animals and many rivers are contaminated with the process. The fashion world is using animal Linking Words
skin
 to make bags, shoes, belts and so on, which is risky for their species, Use synonyms
htey
 can get people in general
they
extinted
. relatively long in duration; tediously protracted
extended
Furthermore
, Linking Words
this
 Linking Words
animals
 Suggestion
animal
are
 still alive when they take their Suggestion
is
skin
. There are many Use synonyms
ilegal
 activities where the animal under risk of prohibited by law or by official or accepted rules
illegal
legal
extition
 are sold for high amount of money.an exorbitant charge
extortion
extension
For example
, the Linking Words
cocrodrile
 large voracious aquatic reptile having a long snout with massive jaws and sharp teeth and a body covered with bony plates; of sluggish tropical waters
crocodile
skin
 is very famous for expensive bags. Use synonyms
for
 me Suggestion
For
this
 is unfair and not Linking Words
neccesary
. absolutely essential
necessary
This
 Linking Words
skin
 can be replaced for Use synonyms
sintetic
 materials. not of natural origin; prepared or made artificially
synthetic
Lastly
, for medical research, some animals are Linking Words
exploted
 with long developed or used to greatest advantage
exploited
explored
exported
trainning
 periods, they receive harmful treatments and they end up dying. Rats are used under poor circumstances and in some cases, scientists made the species mutate. 
 In activity leading to skilled behavior
training
conclusion we
 should delete our bond with animals, it does not bring any advantage for nature and animals should be free.Accept comma addition
conclusion, we