The following table lists the number and variety of organisms in four different ecosystems.
Predict what would happen to Ecosystem 3 immediately after a
volcanic eruption.

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.

After a group of researchers conducts a new experiment that has never been conducted before, what is the best way for other scientists to make sure that the data is real