The answer would be Linnaeus primarily used physical characteristics.
Answer:
Protozoan infection of the intestines. Giardiasis forms cysts and travel through the feces so anything that comes in contact with the feces and the animal has consumed it will host the parasite.
Explanation:
A person that studies rocks minerals and earth's land forms are geologist
It increased slightly if you measure precisely but if you round it did not
Where organisms are better adapted to their environments tend to survive and produce more kids!