Why aren’t there any fossils in layers 6, 8 and 10?

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Which beat describes the brain stem

What surprised you about the position of the letter e when you looked at it under the microscope? practice what did the microscope do to the letter e? remember that the letter e was in readable position when place on the microscope stage.