An example of force that acts at distance is gravity and an example of contact force is pushing a chair across the room
16 percent of the world's population and 50 percent of the Christians population.
The aquifer which will be most effective in purifying polluted ground water is AN AQUIFER COMPOSED MAINLY OF SAND.
An aquifer refers to a zone of permeable rock strata which transmit ground water freely. An aquifer must be permeable and porous. Ground water can be extracted from an aquifer by using a water well.
Answer:roll it down a hill
Explanation:of you roll it down a hill the item builds energy
Explanation:
The statistical study of populations and how they change over time is called demography. Two important measures of a population are population size, the number of individuals, and population density, the number of individuals per unit area or volume.
