• Who is the author? • Is this person an HIV or AIDS expert?
• What is the document's purpose?
• Does the document state facts that scientists can prove with evidence?
• Are there opinions in the document?
How old is the document?
Do other credible sources support the statements in the document?
.
It’s about aids

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a.m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed

2. which is the last step in the scientific method?

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f