Answer:
Immune System
Explanation:
In general, poor hygiene can cause disease, which is most harmful to the immune system.
Answer:
to make a copy, representation, duplicate, or close imitation of:
to reproduce a picture.
to produce again or anew by natural process:
to reproduce a severed branch.
Biology. to produce one or more other individuals of (a given kind of organism) by some process of generation or propagation, sexual or asexual.
to cause or foster the reproduction of (organisms).
Explanation:
Answer: A
Explanation: A heart attack is normally caused by a build up of plaque in the arteries not by an electrical malfunction
Answer:
The Solar System is the Sun and all the objects that orbit around it. The Sun is orbited by planets, asteroids, comets and other things. The Solar System is about 4.6 billion years old.It contains 99.9% of the Solar System's mass. This means that it has strong gravity.
