Pleaseee someone helpp i need to answerrr this correctlyy xx

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

Sickle cell amelia is a condition condition where the red blood cells are deformed which is affected by sickle cell amenia

Ascientist is designing an investigation to study the impact of invasive bird populations on local, native bird populations at backyard bird feeders. what population is most likely to be a control group for the investigation? amount of food number of bird feeders invasive bird populations local backyard birdfeeders without food