Answer:
A)
Explanation:
All minerals must have a definite chemical composition,is not made by man, and be I organic and that only leaves choice A, hope this helps ya out! :)
a passage for surplus water from a dam.
Prokaryotic cells lack a nucleus.
6) A black hole is a part of space that has such a strong gravitational pull that nothing can escape from inside the black hole.
7) A Quasar is a very large celestial object that gives off massive amounts of energy. There is a theory that Quasars contain gigantic black holes in them but it is still yet to be proven.
8) The energy of a Quasar ranges from 1 trillion to 25 trillion of our sun.
9) Stars get their light due to a nuclear reaction that happens inside the star.
Answer:
The respiratory system is made up of the organs involved in the interchanges of gases. It consists of the:
Nose
Mouth
Throat (pharynx)
Voice box (larynx)
Windpipe (trachea)
Airways (bronchi)
Lungs
