<u>d) observing how the heart contracts to pump blood
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Answer:
They can put free classes and free teaches for people who wanna do physical activity and they could even open more gyms but they could make them free for people who cannot afford a memebership and all that at the gym
Explanation:
<span>The correct answers are D. Swing states. These are states that change their support from election to election so you have to win them over all the time. They're not like traditionally republican or traditionally democratic states like Texas and California respectively. Usually who wins them, wins the election.</span>
Answer:
turn off the radiator immediately and move the box away from the heat
Explanation:
The correct answer is A (Automobiles).
Particulate matter is a complex mixture of extremely small particles and liquid droplets.
One of the major components of particulate matter is sulphate usually coming from sulphur dioxide found in exhaust fumes that have been produced by automobiles . Other components are nitrates , ammonia, sodium chloride and black carbon.
Other components of particulate matter come from dust, soot, smoke, industrial emissions.
Particulate matter is one of the most common contributor to air pollution.
