How do bats use sound?

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection

What type of reaction is photosynthesis

What do complement proteins do? a- they heal tissue. b-they cause fever c-they signal phagocytes d-they transport hormones