Jose wants to investigate how physical activity affects heart rate.

What is the testable question?

A freckled person mates with a non-freckled person and all their children have freckles, what is the genotypes of the parents and their offspring?

Explain why scientific methods are important and why there is not one establish way to conduct an investigation

Which of the following statements about the biosphere is NOT true? A The biosphere is a system closed to matter. B Energy enters the biosphere in the form of sunlight. C Nutrients in the biosphere must be continuously recycled.

What's the name of the structural carbohydrate that is found in plant cell wall?

Which of the following molecules can cross the lipid bilayer of a membrane directly, without a transport protein or other mechanism? Select all that apply. water ions proteins oxygen carbon dioxide lipids sucrose

Constitution is the supreme law of a country

Is a alligator have a backbone?

How to write a short story about atoms

What is the closest star to our solar system

Which conditions are required for nuclear fusion to begin? The gas cloud must be very dense. Gravitational attraction must stop. Atoms must be stripped of their electrons. Helium atoms must break down into hydrogen.