Understanding Precipitation, Temperature, and Atmospheric Circulation
Understanding Weather Elements
Types of Precipitation
- Rain: Droplets of liquid water that originate from the condensation of water vapor or ice crystals melting during their fall. Most rain, except in tropical areas, is produced by the latter mechanism.
- Snow: Formed by the growth of ice crystals, often aggregating with smaller crystals. Snowflakes are highly branched aggregates, resulting in a slow rate of fall. Slush can be partially melted snow or frozen rain droplets.
- Hail: Solid ice balls formed
Ecosystems: Definition, Types, and Functioning
Ecosystems: Definition, Components, and Interactions
An ecosystem is a partially constituted physical environment, or biotope (such as a forest, pond, or prairie), and the organisms living in it, the biocenosis (including snakes, grass, lions, etc.). These components interact through a continuous flow of energy and matter.
Biosphere and Interactions
The biosphere is the part of the planet where life exists. It is a large, integrated ecosystem encompassing all of Earth.
- Biotope-Biocenosis Interactions:
Farming Types and Soil Resource Impacts
Types of Farms and Their Impacts
Surface Mining (Pedrera)
Surface mining, or Pedrera, is used when resources are shallow. It involves low-cost extraction of industrial rocks and minerals. This type of exploitation removes material from a mountain using a horizontal front operation. The consequences include:
- Loss of soil
- Landscape impact
- Noise pollution (machinery, trucks)
- Vibration
- Dust pollution
- Risk of landslides after abandonment
Gravel Extraction
Gravel deposits are extracted from sediment, such as river
Read MoreRecycling Processes and Environmental Impact
Glass Recycling
Glass is a silicate that melts at 1200 degrees Celsius. It consists primarily of silica (mainly from quartz), along with limestone and other materials that impart different colors.
Glass Recycling Process:
- Washing, screening, and selection
- Magnetic phase selection
- Manual separation of contaminants
- Screening
- Manual separation of pollutants or grinding
Polymer Recycling
A polymer is a high molecular mass compound consisting of many repeating units (monomers).
Polymer Recycling Process:
- Opening
Recombinant DNA Technology and Evolutionary Theories
Recombinant DNA Technology
Recombinant DNA technology involves several key steps:
- Locating and Isolating the Gene: Restriction enzymes are used to cut DNA into fragments, isolating the desired gene.
- Choosing a Vector: A vector (plasmid or virus) is cut with the same restriction enzyme. The isolated DNA is joined to the vector DNA using DNA ligases, creating recombinant DNA.
- Introducing Recombinant DNA: The recombinant DNA is introduced into a host cell, creating a transgenic organism.
- Checking Gene Expression:
Tsunamis: Formation, Impact, and Safety Measures
The Destructive Power of Tsunamis
In 479 BC, when Persian soldiers besieged the Greek city of Potidaea, the tide retreated much farther than usual, leaving a convenient invasion route.
But this wasn’t a stroke of luck. Before they had crossed halfway, the water returned in a wave higher than anyone had ever seen, drowning the attackers. The Potidaeans believed they had been saved by the wrath of Poseidon…
…but what really saved them was likely the same phenomenon that has destroyed countless others: