Air pollution is when unwanted chemicals and poisonous substances are added to air, making it harmful to most organisms such as humans, plants, animals, etc... and even the atmosphere.
By different human activities, we add a lot
of smoke and dust into the air.
The biggest cause of air pollution is the use of fossil fuels.
These are mainly coal, petrol/diesel, and natural gas.
For example, if you have been in the car before and are stuck in traffic,
you will see fumes coming out of many vehicles.
These fumes are poisonous gasses that make the air polluted.
Answer:
b.False
Explanation:
The assertion that "when all people in a social network are linked by a just a few intermediaries, this generally depends on the presence of a small number of widely connected individuals (superconnectors) through whom most connections run" is false.
Groups can either be primary or secondary
Primary groups is a collection of individual in which we are more connected to and direct contact with, The are mostly small and an examplevof such is family or friends
Secondary groups are more complex and not as "personal" as the primary group, it involves coming together of people of common interests inorder to achieve a certain goal.
Networks are social ties that attached us with other people or group of people
Answer:
C
Explanation:
Because he used to speak Ukrainian but has forgotten about it, he may not do well in a comprehension test. But if he takes lessons, some of his memory may come back, allowing him to learn quickly.
I assume you're talking about the states: The state with the lowest population density is Alaska, with 1.3 people per square mile on average. The state with the highest population density is New Jersey with 1210 people per square mile.
