Phloem contains specialized cells that move sugars and other nutrients both up and down in plants. Which object is the best model of one of these cells?
A. Water balloon

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

Which element is the least metallic between cadmium, silver, zinc, or iron?

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils. the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.