There are some who believe that 
usage
 of Correct article usage
the usage
animals
 for human targets is not appropriate and should be banned, I completely disagree with them because Use synonyms
experiments
 on Use synonyms
animals
 may maintain human health and prevent many diseases as Use synonyms
wel
 as Correct your spelling
well
prolonge
 lives.
Opponents of exploiting Correct your spelling
prolong
animals
 highlight that Use synonyms
animals
 deserve their own lives without suffering and dying for human needs. These creatures already have paid for the neighbourhood with people. Use synonyms
For instance
, Linking Words
animals
 were deprived of habitats and food chains were Use synonyms
destroyd
, so, every year Correct your spelling
destroyed
near to
 50 species have vanished. Correct your spelling
nearly
In addition
, Linking Words
animals
 feel pain, and nobody can help them in lite of their voiceless. It is Use synonyms
proven
 fact, that scientists do not Correct article usage
a proven
use
 painkillers in Use synonyms
experiments
 on Use synonyms
animals
, so rats and Use synonyms
rabits
 go through terrible Correct your spelling
rabbits
pains
.
Fix the agreement mistake
pain
On the other hand
, Linking Words
usage
 of Correct article usage
the usage
animals
 may Use synonyms
rescue
 many human lives. Verb problem
save
This
 is because for testing drags on people, medicines must be Linking Words
well-prepaired
 and safe, which can take Correct your spelling
well-prepared
long
 period of time. Alternatively, raw medical inventions may be injected in rats, significantly decreasing Add an article
a long
Linking Words
overall
 time Correct article usage
the overall
on
 Change preposition
for
creation
 Correct article usage
the creation
medicaments
. As Change preposition
of medicaments
a
 example, the effective vaccine against coronavirus was created so fast because scientists Change the article
an
Use synonyms
use
 mice as the objects for trying Wrong verb form
used
hundreds
 variants of vaccines before they found Add the preposition
hundreds of
a
 correct one. 
In conclusion, I firmly believe that scientists may Correct article usage
the
use
 Use synonyms
animals
 in their Use synonyms
experiments
 because it has many benefits Use synonyms
such
 as Linking Words
creation
 Correct article usage
the creation
new
 remedies and decreasing of time spent on Change preposition
of new
testind
 Correct your spelling
testing
drags
 before it will be ready. Correct your spelling
drugs
Furthermore
, to ameliorate the concerns of unethical usage of Linking Words
enimals
, Correct your spelling
animals
personel
 in laboratories may Correct your spelling
personnel
use
 harmless medicaments in Use synonyms
experiments
 and broadly give painkillers.Use synonyms