Examlex
In the United States, California and Texas have the largest number of undocumented immigrants.
Ecological Service
Benefits to humans provided by natural ecosystems, including pollination, water purification, climate regulation, and nutrient cycling.
Freshwater Systems
Natural bodies of water that have low salt concentrations, such as rivers, lakes, streams, and underground aquifers, crucial for drinking water, agriculture, and habitats.
Nutrient Cycling
The movement and exchange of organic and inorganic matter back into the production of living matter, recycling elements and nutrients through the biosphere.
Hydroelectricity
The production of electricity using the energy generated from flowing or falling water, typically through dams.
Q5: When it rises, air has more weight
Q19: Humans fix Nitrogen into the soil by
Q24: A terrestrial biome has two especially visible
Q32: What percentage of the world's population lives
Q37: Briefly discuss the role and nature of
Q39: Through evolution, plants that have adapted their
Q42: The law of conservation of energy states
Q60: When forests are cut down, most of
Q65: Which of the following countries has the
Q81: Christians consider Saudi Arabia the Holy Land