Question 7 (1 point) saved which of the following is not an example of a biological system in a dynamic steady state? a) the population size of ground squirrels living in my neighborhood has ranged from 20-28 individuals over the past 5 years. b) fire return frequencies are increasing in western u. s. forests over the past few decades, changing the productivity of these forests. oc) over the past 100 years, five herbaceous plant species have gone locally extinct in a grassland, while seven herbaceous plant species have successfully invaded. od) all of the above. question 8 (1 point) doll