Some people argue that all experimentation on animals is bad and should be outlawed. However, others believe that important scientific discoveries can be made from animal experiments. Can experimentation on animals be justified? Are there any alternatives? Give reasons for your answer and include any relevant examples from your own knowledge and experience.

It is more common that

taxis

and

buses

are the only means of

transportation

in some areas. I believe that

this

is a positive development for the growing benefits of protecting the environment for societies

while

there are potential negative effects on individuals who are troubled by the inconvenience. On the one hand, it is a positive development that people are only allowed to depend on

taxis

and

buses

in most cities because they can reduce their harmful impacts on nature.

In other words

, the reliance on

such

public

transportation

Correct your spelling

system

Syst

syst

Correct your spelling

systems

ems can minimize the amount of polluted gas emitted from vehicles

in contrast

to private automobiles, which have become the primary cause of an increasing level of CO2 in modern society.

For instance

, it is known that it leads to a rise of the global temperature at an accelerating speed of about 2 ℃ each year.

This

makes it more demanding for wild creatures to adapt to the sudden change, promoting more extinctions.

Therefore

, the public should be encouraged to take advantage of

such

public

transportation

to protect the clean environment for the prosperity of innocent wild creatures.

On the other hand

, the prevalent use of

taxis

and

buses

will bring about some negative consequences since many people complain about their inconvenience. Indeed, they are often frustrated by long waiting hours

of

Change preposition

on

show examples

public

transportation

. In fact, it often happens that passengers need to wait for about an hour to take

buses

and

taxis

, which are easily affected by road conditions and weather.

Consequently

, people are frequently not able to get to their destination on time and they are frustrated about various unexpected situations.

Furthermore

, conflicts between travellers often occur in

transportation

where they need to share their spaces with others.

For example

, they are more likely to be annoyed by the sneezing noise and the loud music coming from other travellers. In conclusion, I believe that there are more positive effects that the prevailing use of

taxis

and

buses

has on the environment

due to

the declining level of CO2 emitted from these public transportations.

However

, the long waiting time and frequent troubles with other passengers will make it unlikely for them to rely on mass

transportation

.