Rats are very difficult to poison because they nibble a little bit of a novel food, then wait a while before eating more. if they get sick, they develop conditioned taste aversion to the food. how could you develop a poison that would work for rats and avoid conditioned taste aversion?

You can combine a whole bunch of random stuff that might smell putrid and put it near cheese. They wil then run and save themselves, forcring them to make a shiel for itself.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )