Imagine a field of flowers; a field of flowers that are pollinated by basically three different pollinators. one pollinator, bees, attracted to short plants. another, butterflies, prefer plants of medium height and a third pollinator, birds, visits only the tallest plants. pesticide spraying kills many insect pests in the field of flowers but also wipes out the butterfly and bee populations. over time, only birds pollinate tall flowers and eventually the flower gene pool favors taller flowers. this is also an example of selection.

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

Glucose is broken down in different ways, both in the presence and in the absence of oxygen. using the table for reference, what major products are formed in each reaction set?

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.