Answer:
D
Explanation:
it is the smallest particles of any material. It means Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions. Elements can only be changed into other elements using nuclear methods.
Answer:
Four(4) seconds.
Explanation:
<u>Under normal driving conditions, in a clear weather with good visibility and dry roads</u>, a driver driving a normal sized vehicle is advised to stay at least two seconds behind the vehicle in front.
However for a 30 foot bus which is heavier than a normal sized vehicle, and takes longer to come to a stop when the brakes are applied, <u>the driver is advised to stay at least four seconds behind the vehicle in front.</u>
Answer: Observational Study
Explanation: Observational study involves observing and measuring specific characteristics without attempting to modify the subjects being studied.
I wanna say the answer is A but then C seems like it could be it too.