Yes they do observe the law of conservation of mass
Since substances break down much faster under aerobic conditions, as oxygen helps break the molecules apart, in a process called oxidation, biodegradation that actually takes place does so slowly that effects may not be visible in decades after a product was buried, if even then.
Answer:
0.5 Amperes
Explanation:
Information that we have:
Power: 
Voltage: 
and we use the equation that relates this two quantities to the Current (I):
where I is the curent, P is the Power and V is the Voltage.
we substitute the values given for the Power and the Voltage to find the current:
the Current running into the bulb is 0.5 Amperes
Choice c) could represent the third step of inquiry.
Explanation:
Inquiry based learning is organized into inquiry phases.
The five general inquiry phase are
Orientation, conceptualisation, investigation, conclusion and discussion.
The investigation phase can be further divided into experimentation phase.
When Andrew washes three separate loads of dirty laundry ,one on hot setting,one one warm setting and one on cold setting , he is experimenting to collect data and interpreting it.
Only if he investigates will he know, which process will be suitable for doling out cleanest clothes.
