Which best describes what is required for any sound wave to travel?

empty space

any medium

solid

liquid

You are the scientific consultant for a television show about forensic analysis. In an upcoming episode, investigators will compare the DNA of a suspect and a DNA sample collected from the victim's fingernails.

A bird like an osprey can catch a fish. the osprey has massive flight muscles, a white breast and belly to camouflage its presence, and strong feet and claws to hold onto the slippery fish. this is an example of which characteristic of life?

Which of the following is most likely to result from a damaged nerve? A) indigestion B) numbness C) heart failure D) hair loss

In which type of rock would fossils of organisms a and b most likely be found?

How are babies make

A pregnant woman at 37 weeks gestation calls the clinic to say she thinks that she is in labor. the nurse instructs the woman to go to the health care facility based on the client's report of contractions that are:

A human nose is capable of detecting how many basic odors? a. 20 b. 40 c. 49 d. 50

Why is a control necessary to have when designing an experiment?

Why are there many separate ecosystems in a rainforest

Describe several ways in which the cheek epithelial cells differed from the potato, tomato, and onion cells? be specific