Atoms are the basic building blocks of ordinary matter. Atoms can join together to form molecules, which in turn form most of the objects around you. Atoms are composed of particles called protons, electrons and neutrons.
Answer:
- In claustrophobic laboratory a dog is forced to breathe tobacco smoke.
- In another lab, a rat is squeezed into a narrow glass tube and forced to breathe in tobacco smoke.
Both of these sentences hook to draw the reader's attention.
These are such cruel acts done by scientists, action shall be taken against such insane work. Tobacco is so damaging to humans, then just imagine its consequences on these poor animals. Bioethics rules shall be kept in mind before doing such cruel acts.
The small intestines have a protective lining that is resistant to acids
(c) Energy transferred to a machine equals energy transferred from it.
