All of the following statements referring to the uterine cycle are true except
a) fsh and lh directly promote development of the uterine endometrium b) estrogen is secreted by the developing follicle in the follicular phase of the cycle c) the corpus luteum is formed from the ruptured follicle after ovulation d) a decrease in the levels of ovarian hormones signals menstruation

In general, are there any major differences that you can see? explain

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.

If you relate the doppler effect on sound to the color of light waves, a police car would be the color as it approaches and the color as it recedes away from the observer.