Foraminifera caught my interest. They are precious and their study covers so many areas: From field- to home-work, from rock-formations to photography. SEM and computer -stuff. I like the worldwide foraminiferal community - so help- and thoughtful people. Share may enthusiasm.
The theory of evolution wants to explain how we - meaning all living organisms - came to be in all our complexity and variation. In a group of organisms the environmental conditions will favour some individuals while others will not reproduce as well. If heritable characters are the cause a shift in the frequency of these heritable characters within a population will occur after some generations. This process is called natural selection.