Biomass

 In order to measure biomass, destructive techniques are used. Trees are cut down and plants are destroyed, is this unethical?

Biomass is the mass of living organisms in ecosystem and it can refer to species biomass which is the mass of species, or to community biomass is mass of all living things in the community. Biomass can be expressed as the average mass per unit area, or total mass in the community. It can be measured in terms of dried organic mass, so perhaps only %30 of the actual weight might count, the rest being water and because of the living organisms should be dried, ecologists may should kill them to do it. I think if it is just for counting biomass it is ethical because humans cutting trees for making paper, to burn them and be warm, to make furnitures with them so cutting trees for counting biomass is not carnage it is the thing that humans used to do to continue their life.

Was he RACIST?

When Linnaeus did his pioneering work on the naming and classification of living organisms, he divided Homo sapiens in for varieties, so Was Linnaeus racist , in his division of humans into four varieties or in his description of these varieties?

I think yes, because he divides that people by stereo-typing them,  ''Racism is the belief that inherent different traits in human racial groups justify discrimination. In the modern English language, the term "racism" is used predominantly as a pejorative epithet. It is applied especially to the practice or advocacy of racial discrimination of a pernicious nature (i.e. which harms particular groups of people), and which is often justified by recourse to racial stereotyping or pseudo science.'' http://en.wikipedia.org/wiki/Racism, Linnaeus divides humans into 4 groups by looking their appereance and race, he doesn't look who are them, are they female or male, nothing different then their race so it's because I think he is racist.