Answer:
D. DDT
Explanation:
DDT is highly persistent in the environment means that it break down very slowly in the environment. The half-life for DDT is from 2 to 15 years. Half-life is the time needed for the degradation of half of the compound. Persistent bio-accumulative toxic substances (PBTs) are chemicals that break down slowly in the environment and its accumulation in living organisms are toxic. Some PBTs are dispersed through air currents while some uses other environmental pathways, resulting in contamination of regions far from their points of origin.
Answer:
Population (No) Population (Nt)
20,000,000 20,820,000
20,820,000 22,000,000
22,000,000 23,735,000
23,735,000 25,843,000
25,843,000 28,183,000
Explanation:
The change in Gilders population could include factors like prosperous economy and improved healthcare. This is due to the fact that as the birth rates increase the death rates decrease. Improved healthcare has slowed down the death rate. Secondly, the prosperous economy contributes to amount of immigrants coming in and out of this country.
You can find it in a swamp, or near a swamp. You find it in shady and damp areas.
Answer:
Gas (Chemical Energy)
Explanation:
Cars run on gas. They convert the chemical energy in the gas to motion. This is where the system gets its energy. (Unless your system is the car and it moves beacuse is on a hill in which case gravitational potential energy transfers energy to this system).
