We as humans need Nitrogen to survive. We breath 78 percent nitrogen and 21 percent oxygen
There was very fertile land which allowed for plentiful farming, the soil was ideal for farming, this promoted growth
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C. Mass
Explanation:
The physical changes of a substance are those that change its physical properties. Physical properties include attributes such as color, gloss, malleability, shape, texture, or condition.
Answer:
Biomagnification of DDT leads to an increase in its concentration at the higher trophic level and its higher concentration in birds leads to the disturbance in their calcium metabolism. ... In this way, the biomagnification of DDT leads to a decrease in the bird population.
Explanation:
Coordinate capacity of the quantity of retail outlets offering tobacco in their prompt neighborhood.
Tobacco cigarettes: Nearly 90 percent of grown-up smokers started smoking before age 18 and 11 percent of secondary school seniors announced smoking in the most recent month. Smokeless tobacco: Use of smokeless tobacco among teenagers is less basic than cigarette smoking.
