Which examples illustrate characters that are used exclusively for intersexual selection?

What is the name of the competition model depicted in the below graphs? 

The pioneer community is defined as …

A facultative mutualist MUST engage in the mutualistic behavior or will either die or be unable to complete its life cycle

A placeholder for those who took the additional quiz during the review session.

Insects and birds have the ability to see in light spectra beyond what we can see. The picture below is of a black-eyed Susan in the UV spectra, and shows a display that is referred to as:  

What does the pitcher plant provide for the tree shrew?

The Eastern Spotted Skunk, Ocelot, Marten, and Jaguar all compete for a shared resource, which is limited in their environment. On the following table Dr. Hanley has calculated the R* (r star) values for each species. Using this information, which species do you think will out-compete all of the others (i.e., win)? Species K m r R* Eastern Spotted Skunk 23 22 7.6 66.579 Ocelot 21 26 2.5 218.400 Marten 26 1 2.2 11.818 Jaguar 24 19 6.9 66.087

The niche a species occupies is called its _______ niche, but the niche it has potential to occupy is its _______ niche

Population sizes will be limited such that their populations typically stabilize at a particular carrying capacity. In the logistic model, this is denoted by which parameter?