Pls help!! i'll mark you the brainlest Why do scientists use models? Question 1 options:

because some systems are so large, small, or complex they are difficult to predict

all answers are true

to aid in the development of questions and explanations about systems

to replicate and simplify physical reality to allow for precise experiments

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Which material burns faster? metal aluminum

What 3 categories are elements divided