Question

1. a teacher has her students write down hypotheses after making an observation. which is a testable hypothesis? (1 point) if a person gets 8 hours of sleep at night, then their memory during the day will improve. energy gets transferred among all organisms in the food chain. earthquakes and tornadoes occur at the same time. all living organisms are made from at least one cell that begins during sexual reproduction.

Explanation:

A testable hypothesis has an independent variable (cause) and a dependent variable (effect) that can be measured and observed. In "If a person gets 8 hours of sleep at night, then their memory during the day will improve", sleep - time is the independent variable and memory is the dependent variable. We can control sleep - time and measure memory. The other statements are either general facts or lack clear cause - effect relationships for testing.

Answer:

If a person gets 8 hours of sleep at night, then their memory during the day will improve.