Answer
C
Reasoning
Just compare the pics and stuff
Yes it can but there are some issues to using a light microscope such as they are transparent so it’s best to use a prepared slide which has been stained.
Answer:
The scientist is studying oxygen which can also be found in protien. oxygen is the element which makes up to 65% of human body mass. It is also found in proteins inside the body.
If the comet were to strike the planet, the impact energy would be about 300 times that of the asteroid collision that was thought to have caused the Cretaceous-Tertiary extinction that killed the dinosaurs about 65 million years ago.