A student argues that being separated geographically is the only way for speciation to occur. Why is he wrong? *Speciation does not usually rely on geographic isolation.
*Speciation can occur from biological forces as well.
*Speciation can occur from variation as well.
*Speciation does not result from adaptive radiation.

I have all the answers for the quiz (#4 is A)!

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15

your answer should be c) enjoy!

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.