1. I know that a is a prediction that is tested by experiment. • hipótesis

• pregunta

• teoría

• conclusión

2. I know that a is when we use our senses to measure or collect data.

•inference

•observation

• theory

• hypothesis

3. I know that a is a statement made using previous knowledge or observations

•inference

•observation

•theory

•hypothesis

4. I know that the circulatory system and the respiratory system work to maintain homeostasis by helping carry to cells, while also removing carbon dioxide and waste

• oxygen and nutrients

• lactic acid and carbon dioxide

• oxygen and waste

• nutrients and carbon dioxide