Tutor profile: Richard M.
Subject: Earth Science
Within the Rock Cycle, what other types of rocks might become metamorphic rocks?
Any existing rocks could become metamorphic rocks within the rock cycle. To metamorphose means to change in form or nature and any other rock type could be changed when subjected to intense temperature and pressure extremes within the Earth.
Why is natural selection often referred to as "survival of the fittest"?
Natural selection is referred to as "survival of the fittest" because it is believed that only the individuals best suited for survival will live long enough to reproduce and pass on their genetic information.
Subject: Physical Science
Why do elements within the same group of the periodic table display similar chemical properties?
Atoms of these elements within the same group of the periodic table contain the same number of valence electrons. They therefore interact with atoms of other elements in a similar fashion resulting in similar chemical properties.