Which of the following is NOT an example of an internal structure adaptation? fish gills
xylem in plants
hollow bird bones
tree roots

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Which is the function of the hypothalamus in thermoregulation? answers: -sensor -effector -stimulus -intergrating center it's either a or c i believe

Fredrick griffith made a scientific discovery in 1928