Answer:
1 : 5
Explanation:
Ratio is used to show the relationship between two amounts. It tells how many one value is contained within another value. Ratio can be used to compare the size of two or more numbers in relation to each other.
The comparison between this two numbers or quantities is done and expressed by division.
Ratio of triangles to squares = number of triangles : number of squares
Ratio of triangles to squares = 4 : 20
Ratio of triangles to squares = 1 : 5
Answer:
Natural and Basic resources.
they are needed by plants to grow
The Modern World, where everything is artificial and ephemeral; where you have to pay for a "need" created or for clean air.
The greed of man to generate wealth and status regardless of the impact it generates on his environment, to be accepted by his family and society.
Unsustainable production systems, which destroy ecosystems and alter the life of the animals that live there.
Children living in the Modern World, who know little about the nature and the effect of our actions on the environment.
Caring for the environment is in the hands of the new generations, especially those who really care.
1.)<span>a. antibodies
2.)</span><span>b. its mechanism is well understood</span>
