Question

Answer these questions.
1. What is the term for all the living things on the Earth?
2. What is the term for the solid outer part of the Earth?
3. What type of rock is marble?
4. Where in the body are red blood cells made?
5. Which metal is extracted from the ore bauxite?
6. Which particle in atomic nuclei has no charge and is almost the
same mass as a proton?
7. Name the complex carbohydrate that is present in the cell walls
of plants and forms the bulk of indigestible fibre in our diet.
8. What is the chemical name for common salt?
9. What do we call the speed that an object must travel at in
order to escape the gravitational pull of a planet?
10. Is the air in the atmosphere an element, a compound or a mixture?
11.
In terms of electricity, what does AC stand for?
12. What is the pencil lead composed of?​

Answer 1

1. Species
2. The lithosphere
3. Metamorphic rock
4. ln the red bone marrow of bones
5. Aluminium
6. Neutron
7. Cellulose
8. Sodium chloride
9. Escape velocity
10. Air is a mixture but not compound. Its constituents can be separated. For example: oxygen, nitrogen etc.
11. Alternating Current
12. Graphite

Explanation:

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