Why might female widow birds (Euplectes progne) chose males with longer tails even though there are no material benefits to long tails?

The evolution of altruistic behavior is most likely to be between

A 20-year bond pays 6% annually on a face value of $1,000. If similar bonds are currently yielding 4%, what is the market value of the bond pay 6%?

In human females the increased prevalence of birth defects in offspring and of infertility after 30 years of age is known as

In order to evaluate risk, management may also set qualitative risk classes. Rank these four projects from least risky to most risky, all other things being equal.

Which plot is consistent with a geometric growth model in which λ = 1?

Before turning in this exam, read the following passage and verify that you did not engage in any of the activities listed here or below. According to the TCC Student Code of Conduct,  Cheating refers to using or attempting to use unauthorized materials, information or study aids in any academic exercise. Examples include, but are not limited to:- Copying from another student’s examination, research paper, case write-up, lab report, homework assignment, computer program or other academic assignment or exam.- Possessing or using unauthorized notes, text or other aids during an examination, quiz or other assignment.- Looking at someone else’s exam before or during an examination.- Possessing or using an electronic device that contains unauthorized information for a test or assignment such as programming one’s computer or calculator to gain an unfair advantage.- Soliciting, obtaining, possessing or providing to another person an examination or portions of an exam prior or subsequent to the administration of the exam.- Talking, whispering or using a cell phone during an examination for the purpose of obtaining answers to questions I have read the above passage and can verify that I did not obtain unauthorized information from other students while taking this exam, obtain unauthorized information from notes, online materials, or electronic devices, or engage in any other activities listed above that are considered cheating by the TCC student code of conduct 

In determining the cost of retained earnings

How much must you invest today at 8% interest in order to see your investment grow to $8,000 in 10 years?

You conduct a mark-recapture survey of eastern fence lizards (Sceloporus undulates) in a 2-hectare plot in eastern Arizona. You mark 250 lizards and are able to recapture 75, of which 24 are marked. What is the estimated size of the population of fence lizards in this plot? Calculate the estimated population size for the plot and the estimated lizard density per hectare and per square meter. Use the following formulawhere M is the number of initially marked individuals, N is the population size, R is the number of recaptured marked individuals, and C is the total number of individuals recaptured. Round your answer to a whole number.