To be a possible answer to a scientific question, a hypothesis must be A. testable.
B. unique.
C. written.
D. controlled.

Providing immunity by injecting the body with a weakened form a pathogen is known as

Ausable water source is one that can be used by humans for drinking or agriculture. identify the water reservoirs as usable or unusable based on their current state. oceans rivers glaciers freshwater lakes groundwater

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?