The smoke from prescribed burn and managed wildfires is an extremely toxic air pollutant that is very dangerous to<span> unborn fetuses, infant children and elderly people</span>. It also affects normal healthy people without warning. Wood smoke pollution is 12 times more carcinogenic than cigarette smoke, attacks the body cells up to 40 times longer, and kills at least 40,000 adults and children every year. It contains a toxic soup of more than 4,000 chemical compounds of harmful gases and particle matter that go deep in the lungs and kill people, 69 of which are known human carcinogens, including arsenic, particulate matter, ozone, sulfur dioxide, carbon monoxide, hydrocarbons, dioxin, nitrogen oxides, and radioactive material. Warnings to stay inside on high pollution days are misleading and false. The tiny particles and gases seep inside of homes reaching up to 70 percent of the outside pollution level. No one is safe inside or outside of their homes.
Some of the possible consequences of preventing slash and burns and natural wildfires, is that the soil around the old forest may start to erode and lose its mineral wealth and resources. Also, if not controlled, plant life can actually take over human-built structures, and may destroy the structures. Some examples includes: "The Old Piano Tree" in California
Handheld extinguishers, which are commonly sold at hardware stores for use in the kitchen or garage, are pressurized with nitrogen or carbon dioxide (CO2) to propel a stream of fire-squelching agent to the fire
A constant is something that is kept the same throughout the course of a experiment. So I would guess C) because they are not doing anything special. If it’s not C then it is A. :)
The answer is <span>insect and pest populations decreased. </span>
DDT (dichlorodiphenyltrichloroethane) was used as an insecticide which is a substance used to kill insects. That resulted in decrease in insect and pest populations. It is a persistent and non-degradable insecticide, but as well organic pollutant readily accumulated to soils and consequently affects organisms.
