What distinguishes a hypothesis from a theory? A. A theory is a scientific explanation. B. A theory is testable. C. A theory explains a natural phenomenon. D. A theory is backed up by repeated observations and tests.

What percentage of a radioactive species would be found as daughter material after five half-lives?

You would expect similar species with a different number of chromosomes to be genetically compatible and therefore able to reproduce. True or False?

This type of transport required energy and moves molecules against the concentration gradient from low to high.

8. What would happen to the amino acid sequence if you changed the order of the nitrogen bases in DNA

What is the advantage of having muscles that run at different angles in the stomach?

This is a rotating machine that converts the kinetic energy of the wind into mechanical energy. If the mechanical energy is used directly by machinery, such as a grinding stone, the machine is usually called a windmill.

In what way are slime molds similar to kelp?

What does not exist in a supersaturated solution

When dust and ash particles from a volcanic eruption block out sunlight and reduce solar radiation, earth experiences the. This results in temporary climate cooling

Which of Jupiter's moons is volcanically active? Io Ganymede Europa Callisto