9.3 Flashcards
1
Q
what is a cohort?
A
A group of individuals who share a common trait.
2
Q
What does a survivorship curve show?
A
to compare generations, populations, different species.
3
Q
What basic patterns are there?
A
There are type 1, 2, and 3.
4
Q
What is a log scale?
A
a method for graphing and analyzing large values.
5
Q
What do type 1 species do?
A
exhibit high survivorship throughout the life cycle.
6
Q
What do type 2 species do?
A
constant proportion of individuals dying over time at young ages
7
Q
What do type 3 species do?
A
a very high mortability
