"why is progesterone production in the corpus luteum important in the first trimester of pregnancy"

Which best describes a rhinovirus? o a. a virus that causes a common cold o b. a protective shell around a virus o c. a tube the comes off a virus o d. a piece of dna transferred by a virus

What is used to keep track of the gamates and possible offsprings combination

What type of plant is good for a bioassay and where can i buy it? i only have a month.