A virus is a pathogen that contains several components. Which of the following could NOT be a component of a virus?
A A strand of RNA
B A protein shell
C A ribosome
D A viral envelope

The images show fossils of a modern bird and two extinct organisms (a tyrannosaurus rex and an archaeopteryx). based on the structure of the three organisms, it can be concluded that . the archaeopteryx and bird have wings, while dinosaurs have limbs. so, it can be concluded that .

What is a cordon and where is it found

What are the two main phases of a cell cycle