What is the predicted effect of bird presence on the survivorship or biomass of the plants? (hint: if this question leaves you puzzled, it may help to think about feeding time. If there were no birds, would more or less plant tissue be eaten by grasshoppers?).

But isn’t this a question asking ur opinion this is something about u. ( well i would pick somewhat true bc that’s what i do when i don’t know what to choose ) hopefully this =“)

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.