Answer:
To answer the question of what is a biological catalyst, it is enzymes that help break down our bodily systems and help them function appropriately. Some examples of enzymes are: Maltase - These break down sugar maltose found in fatty foods like potatoes and pasta, into glucose.
Explanation:
Well the soil classification is usually done on the basis of particle sizes and composition of soil.
<span>Clay </span>usually consists of particles less than 0.075 mm in size. It is a sticky soil and shows great changes in volume with variation in its water contact. It also shows considerable strength when air dried.
<span>Silt </span>has larger particles than clay and are mainly inorganic in nature. The particle size is less than 0.075mm and exhibits slightly plastic or non plastic behaviour.
Humus is soil consisting of dead and decaying organic matter. It is mainly organic in content but some inorganic particles may be mixed in it. The top soil in a tropical forest may be considered as humus.
I think that the answer is C.
Well, I may not name ALL of the minerals, but I can give you the names of some minerals I've known about:
1. Quartz
2. Magnetite
3. Mica
4. Diamond
But just to let you know, there are many minerals out here on Earth. All you have to do is either remember some minerals you know of, or just do some research.
The various planets are thought to have formed from the solar nebula, the disc-shaped cloud of gas and dust left over from the Sun's formation.