Males of many different frog species will ‘sing,’ producing vocalized sounds as part of a mating ritual that promotes their willingness to mate and advertises their location. this best describes what kind of selection

answer; ///i believe its: ///(embolus);

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully

i believe your answer would be phagocytosis