Answer:
They break down rocks.
Explanation:
The rain is slightly acidic due to the presence of carbon dioxide. Power plants and automobiles produce gases such as sulfur dioxide and nitric oxide, which react with water vapor in the atmosphere to form acid rain. They help in weathering the rocks which makes up the Earth's crust.
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The following are four real life examples of the result of scientific investigation:
1. The development of the whole human genome.
2. The discovery of penicillin.
3. The discovery of a drug that cures tuberculosis.
4.The discovery that atoms have different energy levels and that electrons are found at each level.
All these events comes about as a result of scientific investigations.
Answer:
both
Explanation:
because science is not included in both of them
Answer:
Speed: 109.4–120.7 km/h (68.0–75.0 mph)
Strength: Couldn't find out.
Explanation:
Answer: work = 1,305kJ
Explanation:
angle= 30°
force= 1,500N
distance= 1,000m
The formula for work is : Work= force x distance, however there is an angle of 30° between the direction of force applied and the direction of motion, therefore force must be decomposed to its value on the horizontal axis which is the direction of motion by using the cosine of the very angle.
W= F×cos(α)×D
W= 1,500×cos (30)×1,000
W= 1,305kJ ( kilojoules)