Answer:
Lysosomes are the organelles of the cell which is responsible for the digestion of food materials by using digestive enzymes and it also helps in removing waste materials from the cell. Lysosomes have 60 enzymes which are used in different processes of the cells. Lysosomes act as antigen which helps in the protection of cells against microbes such as bacteria and viruses.
The answer would be sewer systems.
Answer: The heart, blood and blood vessels work together to service the cells of the body.
Explanation: Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen.
2. metal
substances with only one type of atom
3. metalloid
an element that is malleable, polishes to a luster, conducts heat and electricity well, and tends to lose electrons in a chemical reaction
4. nonmetal
an element that is brittle, insulates heat and electricity well, and tends to gain electrons in a chemical reaction
The elements are substances having only one type of atom and metalloids have properties of both metals and nonmetals.
There are some properties of elements, metals, nonmetals, and metalloids:
1. Elements: Substances with only one type of atom.
2. Metal: An element that is malleable, polishes to a luster, conducts heat and electricity well, and tends to lose electrons in a chemical reaction.
3. Metalloid: An element with properties of both metals and nonmetals.
4. Nonmetal: An element that is brittle, insulates heat and electricity well, and tends to gain electrons in a chemical reaction.
Therefore, elements are substances that can not be further decomposed into smaller units by general chemical processes.
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Answer:
1. Elements
Substances with only one type of atom.
2. Metal
An element that is malleable, polishes to a luster, conducts heat and electricity well, and tends to lose electrons in a chemical reaction.
3. Metalloid
An element with properties of both metals and nonmetals.
4. Nonmetal
An element that is brittle, insulates heat and electricity well, and tends to gain electrons in a chemical reaction.
b) found only in the pacific ocean
c) located mostly along coastlines
d)long deep ocean trenches