Give an example of EACH OF THE THREE types of survivorship curves. Explain their general shapes.

Different species have differently shaped survivorship curves. In general, we can divide survivorship curves into three types based on their shapes:

Type I. Humans and most primates have a Type I survivorship curve. In a Type I curve,
organisms tend not to die when they are young or middle-aged but, instead, die when
they become elderly. Species with Type I curves usually have small numbers of offspring
and provide lots of parental care to make sure those offspring survive.
Type I1. Many bird species have a Type Il survivorship curve. In a Type II curve,
organisms die more or less equally at each age interval. Organisms with this type of
survivorship curve may also have relatively few offspring and provide significant parental
care.

Type Ill. Trees
marine invertebrates, and most fish have a Type Ill survivorship curve. In
a Type Ill curve, very few organisms survive their younger years. However, the lucky
ones that make it through youth are likely to have pretty long lives after that. Specles
with this type of curve usually have lots of offspring at once
such as a tree releasing
thousands of seeds-
-but don't provide much care for the offspring.