The quantitative response of yield to density in plant populations has been an important focus of both theoretical research and empirical research. Most studies on yield–density effects have focused ...

What is the purpose of prescribed practical P4? To investigate experimentally the relationship between the mass and volume of liquids and regular solids, and analyse and interpret the data gathered.

This is a preview. Log in through your library . Abstract The dependence of lichen size on factors other than time often poses a major difficulty for lichenometry. In this study the influence of ...

It is tempting to think that some materials are always heavier than other materials. For example, someone might say that metal is heavier than air. But it depends on how much of each material there is ...