Hmmm im reallt not sure this pretty hard im stuck i need help!
The answer is the Precapillary sphincter
The four postulates of the natural selection include.
1. individuals possessing particular traits are have higher likelihood of surviving and reproducing.
2. different individuals in a population have different traits
3.reproductive and survival rate vary with individuals in a given population.
4. some trait differences are inheritable.
The correct order of phases in the menstrual cycle is;
menses, .estrogenic phase, ovulation, and progestational phase.
The menstrual cycle is complex and is controlled by many different glands and hormones that these glands produce.
There are four phases of menstrual cycle; namely, menstruation, the follicular phase, ovulation and the luteal phase.