(Solved): Please answer ALL THREE of the questions, Thank you! What answer best represents whether semelparo ...

Please answer ALL THREE of the questions, Thank you!

What answer best represents whether semelparous or iteroparous life histories are best at functioning in variable environments? Semelparity, if they can time their single but large reproduction to coincide with good survival conditions for their young; Iteroparity, because individuals can learn when conditions are best to reproduce; O Iteroparity, because by reproducing multiple times some of their offspring might be born under good conditions; O Both strategies can be equally good, given their characteristics in a and b; O Both strategies can be equally good, given their characteristics in a and c. QUESTION 8 In a human population I calculate that life expectancy at birth is 60 years, but that at age 6, life expectancy is 72 years. How can this be best explained? There is a low risk of mortality in the first 5 years of life, and it is much higher thereafter. O None of these answers provides a good explanation O It is impossible, this is a calculation error. There is a large risk of mortality in the first 5 years of life, and it is much lower thereafter. There is a low risk of mortality, except in the ages 60 to 72. QUESTION 9 A species of mussel has a type III survivorship curve. What other life history characteristic can we infer from knowing this? O It has parental care O It produces a small number of offspring in its lifetime It has a low life expectancy at birth O It has a constant mortality rate O Both b and care true