If the picture below is of a woman's ovary and secreting a hormone what shape does the receptor have to be shaped as in order for the hormone to bind to ?

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.