__ is a measure of how closely packed together the particles of matter are in a specific volume

Kuhl found that babys brains are most open to learning the consonants in their native language at what age? and vowels at what age?

The y-value if a data point corresponding to x1

Earth takes in thermal energy from the sun in a process called . sunlight strikes earth’s surface at different angles. this angle is called the angle of . btw its