A closed system is a system that makes no physical or chemical exchanges with its environment. Of these systems provided as choices (tree, human, clock, car), only a clock does not make exchanges with the environment, except for energy.
Therefore, of that list, only a clock would be a closed system.
Hope that helped! =)
Answer:
d. sewage treatment and nitrous oxide
Explanation:
False..the energy was depleted just a little..lets say a wolf comes and eats the rabbit..then the energy in the rabbit from grass will deplete a little more and so forth if a human comes and kills the wolf and eats it...the energy always goes down a bit
Answer: Pretty sure (D) is the right answer.
Explanation: Plants consume water, carbon dioxide, and light from the sun to produce oxygen and to survive. The other options have the incorrect input which give it away, they also have wrong outputs that plants do not produce.
Answer:
36 gallons
21 ponds of beef
Explanation:
since JEFF killed the bigcow he got a lot of beef and patrisha or whatever got a skinny minny cow she got 21 pounds less and aptrisha was lazy too so she had 36 gallons of milk less than JEFF
( My NaMe Is JeFf)
GiVe Me BrAiNlEsSt pLeAsE
