The answer would be the 4th option. (Rainwater soaking into the ground). Soil erosion is commonly caused by rainwater soaking into the ground.
Answer: Development
Explanation: The human and natural resources in a developed area or country are brought to their full potential and to the benefit of the people who are citizens or residents there.
Development can be measured economically by the Gross Domestic Product GDP and by its effect on people through the Human Development Index HDI. While GDP measures the total goods and services produced, the HDI measures the level of education and opportunities available to people in the area or country.
The speed of a wave measures how far one particular crest (or trough) moves in a given amount of time. The speed of the wave changes according to the following equation:
v = λ
* f
According this equation, it follows that as the speed and length of a wave decreases, the wave grows higher (the higher the frequency).
It was solved because they had help others by trading
1.The population is rising fast because of inadequate amount of knowledge about family planning.
2.Census is done to check the growth of our population.
3.
