The reason why is a few things, first, they have to make sure that the organism is related, and that they can see that. They don't wanna assign a bird as an insect on accident, so they do tests and then determine. Second, the more factors the better, if you consider all the species in the world, and what makes them different from eachother you would have a very long list. And that is it.
I hope this helps. If you need clarity or anything just ask.
Answer:
THYROID GLAND
Explanation:
Thyroid gland functions in metabolisms by activities of thyroid cells.This cells withdraws Iodine from metabolites and combine it with amino acid tyrosine for productions of Thyroid hormones:
ThyroxineT3,(20%)
TriiodothyronineT4(80%). This production is under the influence of Thyroid stimulating hormones,regulated by the pituitary gland,
T3 and T4 increase calorinogenesis, (liberation of heat from digestion to supply energy,and oxygen consumption of the heart.)
Deficiency of thyroid hormones are goiters, hypothyroidism, and hyperthyroidism
Consequently plant roots will get more moisture with less effort. It also improves soil structure due to alternate drying and cooling and soil aeration which helps in multiplication of micro-organisms. This is the reason that farmers plough their field during summer.
Hope this helps!
~ Kana ^^
alleles of different genes tend to be connected together when does genes are on the same chromosome the Offspring received one recessive allele from each parents
Hope it helps