Primary waves can pass through

What is the major difference between a virus and a viroid?

How would the function of synovial joints be changed if they lacked joint cavities and the bones were united instead?

Science describe how heat moves in a convection current. how is this process responsible for moving earth’s tectonic plates? discuss two ways that humans are impacting our earth. be sure to pick one way we are impacting our land, and one way we are impacting our water. then, create an action plan that includes a way that you and your family can protect the earth from these impacts