ETHICS OF MUSEUMS:Why are people worried?

People say that museums (natural history) are  obsessive collections of animals and plants that contributes to their extinction.Today that isn´t true.

There was a time long, long ago when collectors where allowed to collect 2 elephants per person(too many elephants per person).That is irresponsible, killing a slow reproducing species in such a rate could make the hole species disappear.Today most big mammal collections are made of animals dead in the roads and smaller animals, if endangered will not be obsessively collected.

Museums need many specimens because...

Ex 1:If you just had a male you can´t study the female and if you just had a female you can´t study the male.

Ex 2:If you don´t have enough specimens from different times you don´t if it has different diseases or if immunity has been developing.

Actually museums are a way of preserving what has been lost and what we´re loosing.

LAB ANIMALS:What´s the deal?

Animals have been used in many labs for decades, specially for biology and medicine studies.
Today some people complain to this practice.
Let´s see the positive and negative sides of these practice.
+The use of animals like mice in the lab has made possible understand venom molecules, viruses and bacteria deadliness and sometimes some vaccines.They even made the first step to genetics like "marathon pills" that could lead to old or dissabled people to have exercise or being nearly transparent.
-Some of this experiments are inmoral and don´t give good care of their animal subjects.
If animals have rigths, the trade of them would be banned and no animals would be harmed.
Of course, this theme has many uncertainties:Are the rigths of animals more inportant than global health or understanding anatomy or infection?And what about plants, bacteria, viruses?They´re also used in labs and some crimes have been linked to bio´terrorisim from labs.Are all of thoes  inmoral?If not,Is that fair?