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selective transport is the transport of specific substances by means of protein channels and pumps.
It is a change in a gene that specifically selected
controls what enters and exits membrane by using proteins
Buying and selling.
The Selective Service Act, although the definition you give of it is a bit misleading.
A process known to be an abortion of one or more of the embryos in pregnancy with cases of multi-fetal pregnancy. Also known as selective termination.
Inbreeding is a selective breeding method in which 2 individuals with identical or similar sets of alleles are crossed.
People who are buying things on behalf of a business, as opposed to personal buying.
over leveraged. ------------------------ or perhaps madness!!
Commerce means buying and selling, or trading, between people.
activity of buying and selling. Example: commerce is very simple now!
Trade is the buying and selling of goods and services, for money - or other considerations.