These organisms are not native to an area and are often moved there by human activities.
What are introduced (or invasive) species?
These are the two primary gases that react with water and oxygen to form acid precipitation.
What are sulfur dioxide and nitrogen oxides?
This group of animals is hit the hardest by toxins because they live longer and eat thousands of smaller organisms.
What are top-level carnivores (or predators)?
This gas acts like a "thick blanket" around the Earth, trapping heat in the atmosphere.
What is carbon dioxide (CO2)?
Hurricanes, tornadoes, and blizzards are all examples of this type of activity, which originates in the atmosphere and is related to weather.
What are meteorological activities?
Invasive species often harm the environment by doing this to native species for food and space.
What is outcompeting them?
While normal rain has a pH of 5.6, acid rain usually has a pH below this range.
What is 4.2 to 4.4?
This specific process explains why the concentration of a toxin increases as it moves higher up the food chain.
What is biomagnification?
This environmental issue involves the depletion of the Earth's protective layer.
What is ozone depletion?
This term refers to the excessive richness of nutrients in a lake or body of water, frequently due to runoff.
What is eutrophication?
Invasive species can serve as these, which are carriers that pose a risk to human health by spreading diseases.
What are vectors?
Acid rain affects human health by releasing tiny pollution particles that make it harder for people with these two conditions to breathe.
What are asthma and heart issues?
This is one way toxins are passed from a mother predator directly to her offspring.
What is through fatty milk?
When the ocean absorbs extra CO2, it becomes more acidic, a process often described as the water turning "blank."
What is sour?
These specific activities originate from internal Earth processes and are responsible for shaping the planet’s surface and structure.
What are geological activities?