People in the “prime of life” (aged roughly 20-60), support the populations younger and older than themselves. How might this impact the quality of life in countries with the various shapes of demographic pyramids?

Which statement about the pancreas is not true? a. it is an endocrine organ in the abdomen. b. it release chemicals into the digestive system. c. it releases insulin to increase glucose levels. d. it release hormones into the bloodstream.

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

The mammal pictured below is a silvery mole rat. which statement is an inference based on the picture? the animal is ugly. the animal has hairless feet with sharp claws. the animal has prominent upper and lower incisor teeth. the animal likely has poor vision since its eyes are so small.