In winter, flocks of birds made up of different species of birds can be observed foraging
together. Flocking together allows the birds
to find more food and be more alert to danger.
The birds all need to consume the same scarce
resources, though. What two behaviors do these
mixed flocks display?
A competition and commensalism
B mutualism and competition
C. parasitism and mutualism
D predation and commensalism

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4

9. technology can bring both good and bad things. building a vertical farm can increase food supplies in cities (good), but it may cause unemployment in rural areas (bad). give another example of both the good and bad sides of a technological advancement (5 noints)