Critically evaluate the role of human beings in perpetuating climate change

2 answers:

8 0

Human activities contribute to climate change by causing changes in Earth's atmosphere in the amounts of greenhouse gas- es, aerosols (small particles), and cloudiness. The largest known contribution comes from the burning of fossil fuels, which releases carbon dioxide gas to the atmosphere.

Genrish500 [490]3 years ago

4 0

Explanation:

To many people around the world, earth is considered to be a place for human beings to live together as one big family. It provides us shelters, foods, water, and the most beautiful sceneries. Without doubt, we are bound to nature. However because the existence of climate change, which according to scientists is defined as the long term changes over climate including temperature and rainfall, the world would probably end up with devastated ecosystem, extinct wildlife, and most importantly despondent humans. The impact that it has on us is incredibly strong that it affects the system of human lives and wildlife. Global warming, precipitating weather, glaciers, and rising of sea level are no more phenom

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Explain the term contact force and give examples

aliya0001 [1]

Answer & Explanation:

In physics, a contact force is a force that acts at the point of contact between two objects, in contrast to body forces. Contact forces are described by Newton's laws of motion, as with all other forces in dynamics. Contact force is the force in which an object comes in contact with another object. Contact forces are also direct forces. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball or pushing a desk across a room are some of the everyday examples where contact forces are at work. In the first case the force is continuously applied by the person on the car, while in the second case the force is delivered in a short impulse.

3 0

3 years ago

1. A student attempts to make a saline solution by adding salt to water. How much water did

dexar [7]

111.1 mL of water

Explanation:

Weight per volume concentration (w/v %) is defined as

weight per volume concentration = (mass of solute (g) / volume of solution (mL)) × 100

volume of solution = (mass of solute × 100) / weight per volume concentration

volume of solution = (1 × 100) / 0.9 = 111.1 mL

volume of water = volume of solution = 111.1 mL

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