Dr. Smith has determined that John Jones has an accumulation of fluid in the chest cavity. The doctor is surgically puncturing through the space between John's ribs, using an aspirating needle to withdraw the fluid from the chest cavity. This procedure is known as a .A) pleurodesisB) thoracentesisC) thorax punctureD) thoracotomy

Explain how the political influence of african americans leaders became weaker.

What is the difference between hypothesis, theories, laws, and observations?

Put each tile to the correct location. categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. 1) scientific theories 2) both 3) scientific hypothesis a). a tentative statement used to guide scientific investigations b). makes predictions about future events c). can be tested many independent researches d). based on observations of natural phenomena e) . a well-established highly reliable explanation