They lift loose particles which cause abrasion, they also grind the channels and dissolve soluble material.
Answer:
If you want to look at it from an academic standpoint then the most valuable fossil is the Holotype; the single specimen that was used to describe a species.
Explanation:
Holotypes are priceless, as they are the single specimen that defines the species.
Answer:B
Explanation: Environmental Determinism is the theory that the physical factors in our environment play important roles in the social and cultural development of human. Components like climate, soil, rainfall all determines the social component of a society.
For example, a person living on an island will be used to isolation than an individual living in the city.
An expansive pyramid age-structure diagram best displays the age ranges in a country that is in stage 2 of the demographic transition.
Option d
<u>Explanation:</u>
The shift in demographics from high death rates and high birth rates in societies with lower education, technologies and economically under developed to demographics of low death or birth rates in societies with advanced technology, higher education and persistent economic development and includes the stages between both the scenarios stated is named as demographic transition.
This is to suggest or evaluate the growth rate cycles of the population of the country. There are 3 types of population pyramids namely,
Expansive population pyramids - shows the population that has the greater percentage in younger age groups. Most of the 3rd world nations fall in this category.
Constrictive population pyramids - shows declining birth rates
Stationary population pyramids - depicts equal proportion of population in all age categories.
This is true. The homestead act gave people huge properties for a small price if they were willing to work on the field for 5 years. After 5 years it would become their and they could do with it as they wished.
