A runner starts from rest, runs for 30 seconds at a uniform acceleration of 2m/s2, how fast are they travelling at the end?

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

Which branches of natural science include the study of an organism that lived 10 million years ago

What is the role of lenses in microscopy?