Konrad lorenz found that young birds bond with the first object they see. what type of behavior is this? spatial learning observational learning imprinting

Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake

What are the ingredients of oobleck?

How many pounds does the earth weigh?