Which of the following biological interactions can be considered interspecific mutualism? a) A relationship between two individuals from different species and from which only one benefits b) A population of mussels that have their population size regulated via starfish predation c) Pollination from a hummingbird feeding on a flower d) A lamprey feeding on the blood of a lake trout e) Two lions cooperating with each other while hunting

1. Answer the following questionsa)How long will it take for a dolphin population to be reduced by 50% if the intrinsic rate of increase is -.04?b)In the last 70 years the blue whale population decreased from 340,280 to 4,727. What is the intrinsic rate of decrease (r)? c)If the current intrinsic rate of increase for blue whales is .1, how long will it take the current population of 4,727 to climb back to 340,280?

Name the type of interaction in which one species is harmed while other is neither benefitted nor harmed?

What are the negative effects of shark finning on the ecosystem? (Please be specific and answer in paragraph form)

In a food web, two different species can directly affect each other’s abundance via _ competition or may in fact have their abundance indirectly regulated by a higher trophic level, a phenomenon called ____ competition. a) Intraspecific, apparent b) Interspecific, apparent c) Intraspecific, apparent d) Apparent, interspecific

Because its population is growing rapidly, Mexico probably has a(n) a) low fertility rate. b) old average marriage age. c) age structure dominated by young age groups. d) all of the above

Biologically, what conditions are necessary for stable coexistence of competitors? Describe the major ways that species can adapt to enhance the probability of stable coexistence.

Under which scenario can a hawk successfully invade (or persist among) a population of doves?  Group of answer choices C) Lowest resource value (V << C) D) Options A and B E) Options B and C F) Options A, B, and C B) Lower resource value relative to cost (i.e., V > C and V < 2*C) A) When high resource value relative to cost (i.e., V = 2*C)

8)Which of the following questions would be considered ecological questions? choose all that apply a)How does the availability of rainfall affect pollen production in mulberry trees? b)How do the population dynamics of hawks affect the population dynamics of lizards? c)How does elevation affect the amount of rainfall? d)How did the mouse species present in the Mojave Desert arise? e)How does a mutation in a gene for amylase affect nutrient absorption in white-tailed deer? f)None of these are ecological questions