An atomic theory is a model developed to explain the properties and behaviors of atoms. as with any scientific theory, atomic
theory is based on scientific evidence available at any given time and is subject to change. the development of atomic theory was
contingent on research that discovered and described the subatomic particles. one early model was critical in predicting that the
positive area of an atom was a small, dense location. which model was the first to suggests this?

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

In apex! a liquid heated beyond a certain temperature becomes

Why does asexual reproduction result in offspring with identicle genetic variation