Why are containers sterilised before making yogurt ?

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 feature of cell theory is best demonstrated in the image

Which of the following typically characterizes a tropical rainforests