Answer:
speed of slower car is 71 km/h
Explanation:
The distance between two cars is given as

time taken by two cars to meet is given as

now the relative speed of two cars is given as


also it is given that the difference of speed of two cars is

now from above two equations we have


First, volcanic eruptions produce major quantities of carbon dioxide (CO2), a gas known to contribute to the greenhouse effect. ... The small ash particles decrease the amount of sunlight reaching the surface of the earth and lower average global temperatures.
The believe the answer to this is B
Night hunting animals have more rod cells in their retinas which allows them to see better in the dark.
Answer: repeatable
Explanation: Accurate repeatable is needed in a valid experiment. I think