Shifting plant populations are an example of biological change. A change in temperature is a physical change. Why do biological and physical changes cause
shifts in an ecosystem's populations?

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure